/* Blog Styling */
:root {
    --color-bg: #0a0e27;
    --color-surface: rgba(20, 25, 50, 0.85);
    /* Match main site transparency */
    --color-primary: #00d9ff;
    --color-secondary: #ff006e;
    --color-accent: #8338ec;
    --color-text: #e8f0ff;
    --color-text-dim: #a0b0d0;
    --color-code-bg: #1a1f3a;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'Fira Code', 'Courier New', monospace;
    --backdrop-blur: blur(12px);
    /* Added for glassmorphism */
}

/* Header (Ported from Main Site) */
/* Unified Sticky Header for Blog */
.unified-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 40px;
    background: rgba(10, 14, 39, 0.9);
    /* Dark background for readability */
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.unified-header .brand {
    display: flex;
    flex-direction: column;
}

.unified-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.unified-header .subtitle {
    font-size: 0.8rem;
    margin: 0;
    opacity: 0.8;
    color: var(--color-text-dim);
}

.unified-header .nav-buttons {
    display: flex;
    gap: 12px;
}

/* Ensure icons work if added */
.nav-link {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link .icon {
    width: 18px;
    height: 18px;
}


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

body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: 20px 40px;
    background: linear-gradient(180deg, var(--color-surface) 0%, transparent 100%);
    backdrop-filter: blur(12px);
    z-index: 100;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: var(--color-surface);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border: 1px solid rgba(0, 217, 255, 0.2);
    border-radius: 12px;
    color: var(--color-text);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.15s ease;
    cursor: pointer;
}

.nav-link:hover {
    background: rgba(0, 217, 255, 0.1);
    border-color: var(--color-primary);
    box-shadow: 0 0 20px rgba(0, 217, 255, 0.3);
    transform: translateY(-2px);
    color: var(--color-text);
}

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

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

::-webkit-scrollbar-thumb {
    background: rgba(0, 217, 255, 0.3);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 217, 255, 0.5);
}

/* Blog Post */
.blog-post {
    max-width: 800px;
    margin: 0 auto;
    padding: 100px 40px 60px;
}

.post-header {
    text-align: center;
    margin-bottom: 60px;
    grid-column: 1 / -1;
    /* Ensure spans full width in grid layouts */
}

.post-header h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--color-text-dim);
}

.lead {
    font-size: 1.25rem;
    line-height: 1.8;
    color: var(--color-text);
    margin-bottom: 40px;
}

/* Sections */
section {
    margin-bottom: 60px;
}

h2 {
    font-size: 2rem;
    color: var(--color-primary);
    margin-bottom: 24px;
    margin-top: 48px;
}

h3 {
    font-size: 1.5rem;
    color: var(--color-text);
    margin-bottom: 16px;
    margin-top: 32px;
}

h4 {
    font-size: 1.125rem;
    color: var(--color-text-dim);
    margin-bottom: 12px;
    margin-top: 24px;
}

p {
    margin-bottom: 20px;
    color: var(--color-text-dim);
}

/* Inline links in content */
.blog-post a:not(.nav-link):not(.btn-primary):not(.btn-secondary):not(.blog-card) {
    color: var(--color-primary);
    text-decoration: none;
    border-bottom: 1px solid rgba(0, 217, 255, 0.3);
    transition: all 0.2s ease;
}

.blog-post a:not(.nav-link):not(.btn-primary):not(.btn-secondary):not(.blog-card):hover {
    color: #fff;
    border-bottom-color: var(--color-primary);
    text-shadow: 0 0 8px rgba(0, 217, 255, 0.5);
}

/* Equations */
.equation-block {
    background: var(--color-surface);
    border-left: 4px solid var(--color-primary);
    padding: 24px;
    margin: 32px 0;
    border-radius: 8px;
}

.equation {
    font-size: 1.125rem;
    text-align: center;
    margin: 20px 0;
    color: var(--color-text);
}

.equation-description {
    margin-top: 16px;
    color: var(--color-text-dim);
}

/* Lists */
ul,
ol {
    margin: 16px 0;
    padding-left: 28px;
}

li {
    margin: 8px 0;
    color: var(--color-text-dim);
}

/* Code Blocks */
.code-block {
    background: var(--color-code-bg);
    border-radius: 8px;
    padding: 24px;
    margin: 24px 0;
    overflow-x: auto;
}

.code-block h4 {
    color: var(--color-primary);
    margin-top: 0;
    margin-bottom: 16px;
}

pre {
    margin: 0;
}

code {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.5;
    color: var(--color-text);
}

/* Algorithm Box */
.algorithm-box {
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.1), rgba(131, 56, 236, 0.1));
    border: 1px solid var(--color-primary);
    border-radius: 8px;
    padding: 24px;
    margin: 24px 0;
}

.algorithm-box h3,
.algorithm-box h4 {
    color: var(--color-primary);
    margin-top: 0;
}

.algorithm-box ol {
    margin-top: 16px;
}

/* Note Boxes */
.note {
    background: rgba(131, 56, 236, 0.1);
    border-left: 4px solid var(--color-accent);
    padding: 16px 20px;
    margin: 24px 0;
    border-radius: 4px;
}

.note strong {
    color: var(--color-accent);
}

/* Tables */
.perf-table {
    overflow-x: auto;
    margin: 24px 0;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-surface);
    border-radius: 8px;
    overflow: hidden;
}

thead {
    background: var(--color-code-bg);
}

th,
td {
    padding: 16px;
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

th {
    color: var(--color-primary);
    font-weight: 600;
}

td {
    color: var(--color-text-dim);
}

/* Blog List */
.blog-list {
    max-width: 1000px;
    margin: 0 auto;
    padding: 60px 40px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.blog-card {
    background: var(--color-surface);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-decoration: none;
    display: flex;
    flex-direction: column;
}

.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 40px rgba(0, 217, 255, 0.15);
    border-color: var(--color-primary);
}

.card-content {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.card-date {
    font-size: 0.85rem;
    color: var(--color-primary);
    margin-bottom: 8px;
    font-family: var(--font-mono);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 12px;
    line-height: 1.4;
}

.card-desc {
    font-size: 0.95rem;
    color: var(--color-text-dim);
    line-height: 1.6;
    margin-bottom: 20px;
    flex: 1;
}

.read-more {
    font-size: 0.9rem;
    color: var(--color-primary);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
}

.read-more::after {
    content: "→";
    transition: transform 0.2s;
}

.blog-card:hover .read-more::after {
    transform: translateX(4px);
}


.btn-primary,
.btn-secondary {
    padding: 14px 28px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.2s;
    display: inline-block;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: #000;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 217, 255, 0.3);
}

.btn-secondary {
    background: transparent;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
}

.btn-secondary:hover {
    background: rgba(0, 217, 255, 0.1);
}

/* References */
.references {
    list-style: none;
    padding: 0;
}

.references li {
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    font-style: italic;
}

/* Footer */
.blog-footer {
    text-align: center;
    padding: 40px 20px;
    color: var(--color-text-dim);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 60px;
}

/* Mobile */
@media (max-width: 768px) {

    /* Unified Header - Stack vertically on mobile */
    .unified-header {
        flex-direction: column;
        align-items: flex-start;
        padding: 15px 20px;
        gap: 15px;
    }

    .unified-header .brand {
        width: 100%;
    }

    .unified-header h1 {
        font-size: 1.25rem;
    }

    .unified-header .subtitle {
        font-size: 0.7rem;
    }

    .unified-header .nav-buttons {
        width: 100%;
        flex-wrap: wrap;
        gap: 8px;
    }

    .unified-header .nav-link,
    .nav-link {
        padding: 8px 12px;
        font-size: 12px;
        flex: 1 1 auto;
        justify-content: center;
        min-width: fit-content;
    }

    .unified-header .nav-link .icon,
    .nav-link .icon {
        width: 14px;
        height: 14px;
    }

    .blog-post {
        padding: 40px 20px;
    }

    .blog-list {
        padding: 30px 20px;
        gap: 20px;
    }

    .post-header {
        margin-bottom: 30px;
    }

    .post-header h1 {
        font-size: 1.75rem;
    }

    .lead {
        font-size: 1.125rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .cta {
        flex-direction: column;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
        text-align: center;
    }

    .blog-card {
        min-width: 100%;
    }

    .card-title {
        font-size: 1.1rem;
    }

    .card-desc {
        font-size: 0.9rem;
    }
}

/* Extra small screens */
@media (max-width: 480px) {

    .unified-header .nav-link,
    .nav-link {
        padding: 6px 10px;
        font-size: 11px;
    }

    .post-header h1 {
        font-size: 1.5rem;
    }

    .blog-list {
        padding: 20px 15px;
    }
}