/*
Theme Name: Mindy Theme
Theme URI: https://mindy-dev.com
Author: Mindy Team
Description: A custom theme for Mindy Developer Blog, featuring "Fluid Intelligence" design.
Version: 1.0
*/

:root {
    /* Brand Colors (MDS v1.2) */
    --color-brand-start: #87CEFA;
    /* Sky Blue */
    --color-brand-end: #6A5ACD;
    /* Slate Blue */
    --color-brand-primary: #6A5ACD;

    /* Semantic Colors */
    --color-continues: #6A5ACD;
    --color-quotes: #10B981;
    --color-associates: #3B82F6;
    --color-topic: #F59E0B;
    --color-replacements: #F43F5E;

    /* Action Colors */
    --color-like-active: #ef4444;
    --color-repost-active: #10B981;
    --color-error: #ef4444;
    --color-error-bg: #fef2f2;
    --color-success: #10B981;

    /* Neutral Colors (Light Mode Default) */
    --color-bg-primary: #FFFFFF;
    --color-bg-secondary: #F8FAFC;
    /* Slate 50 */
    --color-bg-tertiary: #F9FAFB;
    --color-bg-hover: #F3F4F6;

    --color-text-primary: #1E293B;
    /* Slate 800 */
    --color-text-secondary: #64748B;
    /* Slate 500 */
    --color-text-tertiary: #6B7280;
    --color-text-disabled: #94A3B8;
    /* Slate 400 */
    --color-text-placeholder: #9CA3AF;

    --color-border-light: #E5E7EB;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

    /* Spacing & Layout */
    --radius-card: 12px;
    --radius-button: 8px;
    --radius-chip: 12px;
    --radius-input: 8px;

    --spacing-base: 4px;
    --spacing-card: 16px;
}

/* Dark Mode (Media Query or Class) */
@media (prefers-color-scheme: dark) {
    :root {
        --color-bg-primary: #0F172A;
        /* Slate 900 */
        --color-bg-secondary: #1E293B;
        /* Slate 800 */
        --color-bg-tertiary: #334155;
        --color-bg-hover: #334155;

        --color-text-primary: #F1F5F9;
        /* Slate 100 */
        --color-text-secondary: #94A3B8;
        /* Slate 400 */
        --color-text-tertiary: #CBD5E1;

        --color-border-light: #334155;
    }
}

body {
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

a {
    color: var(--color-brand-primary);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--color-brand-start);
}

/* Layout */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header */
.site-header {
    background-color: rgba(255, 255, 255, 0.8);
    border-bottom: 1px solid var(--color-border-light);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
}

@media (prefers-color-scheme: dark) {
    .site-header {
        background-color: rgba(15, 23, 42, 0.8);
    }
}

.site-branding {
    display: flex;
    align-items: center;
}

.logo-link {
    display: block;
    line-height: 0;
}

.site-logo {
    height: 32px;
    width: auto;
}

/* Navigation */
.main-navigation {
    display: flex;
    align-items: center;
}

.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 2rem;
}

.nav-menu li {
    position: relative;
}

.nav-menu a {
    color: var(--color-text-secondary);
    font-weight: 500;
    font-size: 0.9375rem;
    /* 15px */
    transition: color 0.2s;
    padding: 0.5rem 0;
    display: block;
}

.nav-menu a:hover,
.nav-menu .current-menu-item>a {
    color: var(--color-brand-primary);
}

/* Mobile Menu */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    color: var(--color-text-primary);
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    .main-navigation {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--color-bg-primary);
        border-bottom: 1px solid var(--color-border-light);
        padding: 1rem;
        box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    }

    .main-navigation.toggled {
        display: block;
        animation: slideDown 0.2s ease-out;
    }

    .nav-menu {
        flex-direction: column;
        gap: 0.5rem;
    }

    .nav-menu a {
        padding: 0.75rem 0;
        border-bottom: 1px solid var(--color-bg-hover);
    }

    .nav-menu li:last-child a {
        border-bottom: none;
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Main Content */
.site-main {
    padding: 2rem 0;
}

/* Post Grid (Index) */
.post-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

.post-card {
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-card);
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
    border: 1px solid var(--color-border-light);
    display: flex;
    flex-direction: column;
}

.post-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    border-color: var(--color-brand-primary);
}

.post-thumbnail {
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background-color: var(--color-bg-tertiary);
}

.post-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.post-card:hover .post-thumbnail img {
    transform: scale(1.05);
}

.post-card-content {
    padding: var(--spacing-card);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.post-card-title {
    font-size: 1.25rem;
    /* 20px */
    font-weight: 600;
    margin: 0 0 0.5rem 0;
    line-height: 1.4;
}

.post-card-title a {
    color: var(--color-text-primary);
}

.post-card-title a:hover {
    color: var(--color-brand-primary);
}

.post-card-meta {
    font-size: 0.875rem;
    /* 14px */
    color: var(--color-text-secondary);
    margin-bottom: 0.75rem;
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.post-card-excerpt {
    font-size: 1rem;
    /* 16px */
    color: var(--color-text-secondary);
    margin-bottom: 1rem;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.5;
}

.btn-read-more {
    display: inline-block;
    color: var(--color-brand-primary);
    font-weight: 600;
    font-size: 0.875rem;
}

.btn-read-more:hover {
    text-decoration: underline;
}

/* Single Post */
.single-post {
    max-width: 720px;
    margin: 0 auto;
}

.entry-header {
    margin-bottom: 2rem;
    text-align: center;
}

.entry-title {
    font-size: 2rem;
    /* 32px */
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.3;
    color: var(--color-text-primary);
}

.entry-meta {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    /* 15px */
}

.entry-content {
    font-size: 1.0625rem;
    /* 17px */
    line-height: 1.75;
    color: var(--color-text-primary);
}

.entry-content p {
    margin-bottom: 1.5rem;
}

.entry-content h2 {
    font-size: 1.5rem;
    /* 24px */
    font-weight: 700;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    color: var(--color-text-primary);
}

.entry-content h3 {
    font-size: 1.25rem;
    /* 20px */
    font-weight: 600;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
    color: var(--color-text-primary);
}

.entry-content a {
    color: var(--color-brand-primary);
    text-decoration: underline;
    text-underline-offset: 4px;
}

.entry-content blockquote {
    border-left: 4px solid var(--color-brand-primary);
    margin: 2rem 0;
    padding-left: 1.5rem;
    font-style: italic;
    color: var(--color-text-secondary);
    background: var(--color-bg-secondary);
    padding: 1rem 1rem 1rem 1.5rem;
    border-radius: 0 var(--radius-card) var(--radius-card) 0;
}

.entry-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-card);
    margin: 2rem 0;
}

/* Code Blocks */
pre {
    background-color: #1e293b;
    /* Slate 800 */
    color: #f8fafc;
    /* Slate 50 */
    padding: 1.5rem;
    border-radius: var(--radius-card);
    overflow-x: auto;
    font-family: 'Fira Code', monospace;
    /* Fallback to monospace if not available */
    font-size: 0.9375rem;
    line-height: 1.7;
    margin: 2rem 0;
    border: 1px solid #334155;
}

code {
    font-family: 'Fira Code', monospace;
    background-color: var(--color-bg-hover);
    padding: 0.2em 0.4em;
    border-radius: 4px;
    font-size: 0.9em;
    color: var(--color-brand-primary);
}

pre code {
    background-color: transparent;
    padding: 0;
    color: inherit;
    font-size: inherit;
}

/* Footer */
.site-footer {
    padding: 3rem 0;
    text-align: center;
    color: var(--color-text-secondary);
    border-top: 1px solid var(--color-border-light);
    margin-top: 5rem;
    background-color: var(--color-bg-secondary);
}

/* Pagination */
.pagination {
    margin-top: 3rem;
    display: flex;
    justify-content: center;
    gap: 0.5rem;
}

.pagination .page-numbers {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 2.5rem;
    height: 2.5rem;
    border-radius: var(--radius-button);
    background-color: var(--color-bg-secondary);
    color: var(--color-text-primary);
    font-weight: 500;
    border: 1px solid var(--color-border-light);
    transition: all 0.2s;
}

.pagination .page-numbers.current,
.pagination .page-numbers:hover {
    background-color: var(--color-brand-primary);
    color: #fff;
    border-color: var(--color-brand-primary);
}

/* Tags */
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.tag-cloud a {
    background-color: var(--color-bg-tertiary);
    color: var(--color-brand-primary);
    font-size: 0.8125rem;
    /* 13px */
    font-weight: 500;
    padding: 4px 10px;
    border-radius: var(--radius-chip);
    transition: background-color 0.2s;
}

.tag-cloud a:hover {
    background-color: #e0e7ff;
    /* Light Indigo */
}