:root {
    --md-primary-fg-color: #3f51b5;
    --md-primary-fg-color--transparent: rgba(63, 81, 181, 0.7);
    --md-accent-fg-color: #3f51b5;

    /* Modern UI variables */
    --glass-bg: rgba(255, 255, 255, 0.85);
    /* Slightly more opaque blue-tinted glass */
    --glass-border: rgba(63, 81, 181, 0.15);
    --glass-blur: 18px;
}

[data-md-color-scheme="slate"] {
    --glass-bg: rgba(28, 31, 46, 0.8);
    --glass-border: rgba(255, 255, 255, 0.08);
}

/* Glassmorphism Header */
.md-header,
[data-md-color-scheme="default"] .md-header,
[data-md-color-scheme="slate"] .md-header {
    background-color: var(--glass-bg) !important;
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-bottom: 1px solid var(--glass-border);
    transition: background-color 0.3s, border-color 0.3s;
    color: var(--md-primary-fg-color);
}

.md-header__button.md-logo img {
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

/* Smooth Navigation */
.md-nav__link {
    transition: color 0.25s, background-color 0.2s, padding-left 0.25s;
}

.md-nav__link:hover {
    background-color: rgba(63, 81, 181, 0.05);
    padding-left: 12px !important;
    color: var(--md-primary-fg-color);
}

[data-md-color-scheme="slate"] .md-nav__link:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

/* Premium Cards and Containers */
.md-content__inner {
    padding-top: 1.5rem;
}

.md-typeset h1 {
    font-weight: 800;
    letter-spacing: -0.025em;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--md-primary-fg-color), #7986cb);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.md-typeset h2 {
    font-weight: 700;
    letter-spacing: -0.015em;
    border-bottom: none;
    margin-top: 2.5rem;
}

/* Code Blocks Optimization */
.highlight {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid var(--glass-border);
}

[data-md-color-scheme="slate"] .highlight {
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.2);
}

code {
    font-size: 0.85em !important;
}

/* Admonitions (Notes, Tips, etc.) */
.md-typeset .admonition,
.md-typeset details {
    border-radius: 12px;
    border-left-width: 6px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: transform 0.2s ease;
}

.md-typeset .admonition:hover,
.md-typeset details:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.08);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 10px;
}

[data-md-color-scheme="slate"] ::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.2);
}

/* Search bar optimization */
.md-search__inner {
    border-radius: 10px;
    overflow: hidden;
}

.md-search__form {
    transition: background-color 0.2s;
}

/* Hero Section Styles (for index.md) */
.hero-container {
    padding: 4rem 2rem;
    text-align: center;
    background: radial-gradient(circle at top right, rgba(63, 81, 181, 0.05), transparent),
        radial-gradient(circle at bottom left, rgba(121, 134, 203, 0.05), transparent);
    border-radius: 24px;
    margin-bottom: 3rem;
    border: 1px solid var(--glass-border);
}

.hero-title {
    font-size: 3.5rem !important;
    font-weight: 900 !important;
    margin-bottom: 1rem !important;
    line-height: 1.1 !important;
    background: linear-gradient(135deg, var(--md-primary-fg-color), #7986cb);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Grid Cards Improvements */
.grid.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.grid.cards>ul {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    padding: 0;
    margin: 0;
}

.grid.cards>ul>li {
    flex: 1 1 calc(50% - 1.5rem);
    min-width: 250px;
    list-style: none !important;
    border-radius: 16px;
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    padding: 1.5rem;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s ease, border-color 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
    display: flex;
    flex-direction: column;
}

.grid.cards>ul>li:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
    border-color: var(--md-primary-fg-color);
}

.grid.cards hr {
    margin: 1rem 0;
    opacity: 0.1;
}

.hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.8;
    max-width: 700px;
    margin: 0 auto 2rem;
}