@import url('https://fonts.googleapis.com/css2?family=Inter+Tight:wght@400;500;600;700&display=swap');

:root {
    /* Dark theme colors */
    --primary-color: #b560fa;
    --secondary-color: #b83bf6;
    --primary-link-color: #37a2ff;
    --secondary-link-color: #00ffe5;
    --bg-color: #111827;
    --card-bg: #1F2937;
    --card-bg-nav: rgba(14, 14, 25, 0.1);
    --text-color: #E5E7EB;
    --text-light: #9CA3AF;
    --code-bg: #374151;
    --border-color: #374151;
    --note-bg: #904914;
    --note-border: #df6112;
    --warning-bg: #5b0909;
    --warning-border: #c11212;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 1.875rem;
    --font-size-3xl: 2.5rem;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    background-color: var(--bg-color);
}

body {
    font-family: 'Inter Tight', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

/* Layout */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

@media (max-width: 768px) {
    .container {
        padding: var(--spacing-sm);
    }
}

/* nav bar */
.nav-bar {
    padding: var(--spacing-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    background: transparent;
}

.nav-card {
    background-color: var(--card-bg-nav);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: box-shadow 0.2s;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    height: 40px;
}

.logo-image {
    height: 100%;
    width: auto;
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-link {
    color: var(--text-color);
    text-decoration: none;
    padding: var(--spacing-sm);
    border-radius: 12px;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-link:hover {
    background-color: var(--hover-bg);
    color: var(--primary-color);
    transform: translateY(-1px);
}

.nav-icon {
    width: 24px;
    height: 24px;
}

/* header styles */
header {
    margin: var(--spacing-lg) auto;
    max-width: 1200px;
    padding: 0 var(--spacing-lg);
}

.header-card {
    background-color: var(--card-bg);
    border-radius: 30px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    position: relative;
}

.header-image {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
}

.header-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.header-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        to bottom,
        rgba(31, 41, 55, 1) 0%,
        rgba(31, 41, 55, 0.3) 100%
    );
}

.header-content {
    position: relative;
    z-index: 2;
    padding: var(--spacing-xl) var(--spacing-lg);
    min-height: 300px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}

.header-metadata {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--text-light);
    font-size: var(--font-size-sm);
    /*margin-top: var(--spacing-sm); */
}

.header-metadata-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.metadata-icon {
    width: 16px;
    height: 16px;
}

.header-content h1,
.header-metadata {
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    color: var(--text-color);
}

h1 {
    font-size: var(--font-size-3xl);
}

h2 {
    font-size: var(--font-size-2xl);
    color: var(--primary-color);
    margin-top: var(--spacing-md);
}

h3 {
    font-size: var(--font-size-xl);
    margin-top: var(--spacing-lg);
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-color);
}

/* Card Component */
.card {
    background-color: var(--card-bg);
    border-radius: 30px;
    padding: var(--spacing-lg);
    margin: var(--spacing-md) 0;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    overflow: hidden;
    word-wrap: break-word;
}


/* Image and Figure Styles */
.figure {
    margin: var(--spacing-lg) 0;
}

.figure img {
    max-width: 100%;
    height: auto;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    display: block;
}

.figure-caption {
    text-align: center;
    color: var(--text-light);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
    padding: 0 var(--spacing-sm);
}

/* Steps and Lists */
.method {
    margin-bottom: var(--spacing-xl);
}

.step {
    margin: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
    position: relative;
    color: var(--text-color);
}

.step:before {
    content: "•";
    color: var(--primary-color);
    font-weight: bold;
    position: absolute;
    left: var(--spacing-sm);
}

/* Notes and Warnings */
.note {
    background-color: var(--note-bg);
    border-left: 4px solid var(--note-border);
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
    border-radius: 4px;
}

.warn {
    background-color: var(--warning-bg);
    border-left: 4px solid var(--warning-border);
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
    border-radius: 4px;
}

/* Code Blocks */
code {
    background-color: var(--code-bg);
    padding: 0.2em 0.4em;
    border-radius: 4px;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    color: #A5F3FC;
}

/* Table of Contents */
.toc {
    background-color: var(--card-bg);
    border-radius: 8px;
    margin: var(--spacing-md) 0;
    border: 1px solid var(--border-color);
}

.toc-header {
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-color);
}

.toc-header:hover {
    background-color: var(--code-bg);
}

.toc-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.toc-content.expanded {
    max-height: 1000px;
}

.toc-list {
    list-style: none;
    padding: var(--spacing-md);
}

.toc-item {
    margin-bottom: var(--spacing-xs);
}

.toc-item a {
    color: var(--text-light);
    text-decoration: none;
    display: block;
    padding: var(--spacing-xs) 0;
    transition: color 0.2s;
}

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

/* Code Block Styles */
.code-block {
    position: relative;
    margin: var(--spacing-md) 0;
    background-color: var(--code-bg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    width: 100%;
    min-width: 0; 
}

.code-block pre {
    padding: var(--spacing-md);
    margin: 0;
    overflow-x: auto;
    overflow-y: hidden;
    width: 100%;
    box-sizing: border-box;
    white-space: pre;
    word-wrap: normal;
    word-break: normal;
}

.code-block code {
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: var(--font-size-sm);
    background: none;
    padding: 0;
    color: #A5F3FC;
    display: block;
    width: 100%;
}

@media (max-width: 768px) {
    .code-block {
        margin-left: calc(var(--spacing-lg) * -1);
        margin-right: calc(var(--spacing-lg) * -1);
        border-radius: 0;
        border-left: none;
        border-right: none;
    }
    
    .code-block pre {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: 0.8rem;
        -webkit-overflow-scrolling: touch;
    }
    
    .code-block pre::-webkit-scrollbar {
        height: 8px;
    }
    
    .code-block pre::-webkit-scrollbar-track {
        background: var(--code-bg);
    }
    
    .code-block pre::-webkit-scrollbar-thumb {
        background: var(--border-color);
        border-radius: 4px;
    }
}


.copy-button {
    position: absolute;
    top: var(--spacing-xs);
    right: var(--spacing-xs);
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    border-radius: 4px;
    padding: var(--spacing-xs) var(--spacing-sm);
    cursor: pointer;
    font-size: var(--font-size-sm);
    opacity: 0.8;
    transition: all 0.2s;
}

.copy-button:hover {
    opacity: 1;
    background-color: var(--code-bg);
}

.copy-button.copied {
    background-color: #059669;
    color: white;
    border-color: #047857;
}

/* Icon for expand/collapse */
.toc-icon {
    width: 20px;
    height: 20px;
    transition: transform 0.3s;
    stroke: var(--text-color);
}

.toc-icon.expanded {
    transform: rotate(180deg);
}

@media (max-width: 640px) {
    .copy-button {
        padding: 4px 8px;
        font-size: 12px;
    }
}

/* Selection color */
::selection {
    background-color: var(--primary-color);
    color: var(--bg-color);
}


/* Related Articles Section */
.related-docs {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.related-docs h2 {
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
}

.related-docs-list {
    list-style: none;
    padding: 0;
}

.related-doc-item {
    margin-bottom: var(--spacing-sm);
}

.related-doc-link {
    display: flex;
    align-items: center;
    padding: var(--spacing-sm);
    text-decoration: none;
    color: var(--text-color);
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    transition: background-color 0.2s;
}

.related-doc-link:hover {
    background-color: var(--code-bg);
}

.related-doc-icon {
    margin-right: var(--spacing-sm);
    color: var(--primary-color);
}

.related-doc-text {
    flex-grow: 1;
}

.minimal-link {
    color: var(--primary-link-color);
    text-decoration: none;
    position: relative;
    font-weight: 500;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    display: inline-flex;
    align-items: center;
    text-shadow: 
        0 1px 2px rgba(0, 0, 0, 0.8),
        0 2px 4px rgba(0, 0, 0, 0.384),
        0 0 8px rgba(4, 146, 255, 0.3);
    filter: drop-shadow(0 20px 20px rgba(4, 146, 255, 0.15));
}

.minimal-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background: linear-gradient(45deg, var(--primary-link-color), var(--secondary-link-color));
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    border-radius: 2px;
    box-shadow: 0 2px 8px rgba(4, 146, 255, 0.3);
}

.minimal-link::before {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background: linear-gradient(45deg, var(--primary-link-color), var(--secondary-link-color));
    transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    border-radius: 2px;
    filter: blur(4px);
    opacity: 0;
}

.minimal-link:hover::after {
    width: 100%;
    box-shadow: 0 4px 12px rgba(4, 146, 255, 0.5);
    animation: underlinePulse 1.5s ease-in-out infinite;
}

.minimal-link:hover::before {
    width: 100%;
    opacity: 0.6;
}

.minimal-link:hover {
    color: var(--secondary-link-color);
    transform: translateX(8px) translateY(-2px);
    text-shadow: 
        0 1px 3px rgba(0, 0, 0, 0.9),
        0 3px 6px rgba(0, 0, 0, 0.7),
        0 0 12px rgba(0, 119, 179, 0.5);
    filter: drop-shadow(0 8px 20px rgba(0, 119, 179, 0.3));
}

@keyframes underlinePulse {
    0%, 100% {
        box-shadow: 0 4px 12px rgba(4, 146, 255, 0.5);
        transform: scaleY(1);
    }
    50% {
        box-shadow: 0 6px 20px rgba(4, 146, 255, 0.8);
        transform: scaleY(1.2);
    }
}

.minimal-link:active {
    transform: translateX(4px) translateY(0px) scale(0.98);
    transition: all 0.1s ease;
}