/*
Theme Name: TechBlue Minimal
Theme URI: https://savedelete.com
Author: SaveDelete
Author URI: https://savedelete.com
Description: A minimal, modern tech blog theme with cool blue shades, optimized for readability and tech content
Version: 1.0
License: GPL v2 or later
Text Domain: techblue-minimal
*/

/* CSS Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Cool Blue Color Palette */
    --primary-blue: #0066cc;
    --light-blue: #4d94ff;
    --pale-blue: #e6f2ff;
    --dark-blue: #003d7a;
    --midnight-blue: #001f3f;
    --sky-blue: #87ceeb;
    --ice-blue: #f0f8ff;

    /* Neutral Colors */
    --white: #ffffff;
    --off-white: #fafbfc;
    --light-gray: #f5f7fa;
    --gray: #8492a6;
    --dark-gray: #3c4858;
    --black: #1a1a1a;

    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', monospace;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-xxl: 5rem;

    /* Layout */
    --max-width: 1200px;
    --article-width: 720px;

    /* Effects */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 1px 3px rgba(0, 102, 204, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 102, 204, 0.1);
    --shadow-lg: 0 10px 40px rgba(0, 102, 204, 0.15);
}

/* Base Typography */
html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--dark-gray);
    background: var(--off-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--midnight-blue);
    margin-bottom: var(--space-sm);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1.1rem; }

p {
    margin-bottom: var(--space-md);
    line-height: 1.8;
}

a {
    color: var(--primary-blue);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--light-blue);
}

/* Header Styles */
.site-header {
    background: linear-gradient(135deg, var(--white) 0%, var(--ice-blue) 100%);
    border-bottom: 1px solid rgba(0, 102, 204, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95);
}

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

.site-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    letter-spacing: -0.5px;
}

.site-title:hover {
    color: var(--dark-blue);
}

/* Navigation */
.main-navigation ul {
    list-style: none;
    display: flex;
    gap: var(--space-lg);
}

.main-navigation a {
    color: var(--dark-gray);
    font-weight: 500;
    padding: var(--space-xs) 0;
    position: relative;
}

.main-navigation a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-blue);
    transition: var(--transition);
}

.main-navigation a:hover::after,
.main-navigation .current-menu-item a::after {
    width: 100%;
}

/* Main Content Area */
.site-content {
    max-width: var(--max-width);
    margin: var(--space-xl) auto;
    padding: 0 var(--space-lg);
}

/* Article Cards for Homepage/Archive */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.article-card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0, 102, 204, 0.08);
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(0, 102, 204, 0.2);
}

.article-card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: linear-gradient(135deg, var(--pale-blue), var(--ice-blue));
}

.article-card-content {
    padding: var(--space-md);
}

.article-meta {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-xs);
    font-size: 0.875rem;
    color: var(--gray);
}

.article-category {
    color: var(--primary-blue);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 1px;
}

.article-card-title {
    font-size: 1.25rem;
    margin-bottom: var(--space-xs);
    line-height: 1.4;
}

.article-card-title a {
    color: var(--midnight-blue);
}

.article-card-title a:hover {
    color: var(--primary-blue);
}

.article-excerpt {
    color: var(--gray);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: var(--space-sm);
}

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

.read-more::after {
    content: '→';
    transition: var(--transition);
}

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

/* Single Article Styles */
.single-article {
    max-width: var(--article-width);
    margin: 0 auto;
    background: var(--white);
    border-radius: 12px;
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
}

.article-header {
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid rgba(0, 102, 204, 0.1);
}

.article-title {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
    color: var(--midnight-blue);
    line-height: 1.3;
}

.article-info {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    color: var(--gray);
    font-size: 0.95rem;
}

.article-info span {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

/* Article Content Typography */
.article-content {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--dark-gray);
}

.article-content h2 {
    margin-top: var(--space-xl);
    margin-bottom: var(--space-md);
    padding-top: var(--space-md);
    font-size: 1.75rem;
}

.article-content h3 {
    margin-top: var(--space-lg);
    margin-bottom: var(--space-sm);
    font-size: 1.5rem;
}

.article-content p {
    margin-bottom: var(--space-md);
}

.article-content ul,
.article-content ol {
    margin-bottom: var(--space-md);
    margin-left: var(--space-lg);
}

.article-content li {
    margin-bottom: var(--space-xs);
}

.article-content blockquote {
    border-left: 4px solid var(--primary-blue);
    padding-left: var(--space-md);
    margin: var(--space-lg) 0;
    font-style: italic;
    color: var(--gray);
    background: var(--ice-blue);
    padding: var(--space-md);
    border-radius: 8px;
}

.article-content code {
    background: var(--pale-blue);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.9em;
    color: var(--dark-blue);
}

.article-content pre {
    background: var(--midnight-blue);
    color: var(--white);
    padding: var(--space-md);
    border-radius: 8px;
    overflow-x: auto;
    margin-bottom: var(--space-md);
}

.article-content pre code {
    background: none;
    color: inherit;
    padding: 0;
}

.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: var(--space-lg) 0;
    box-shadow: var(--shadow-md);
}

/* Featured Badge */
.featured-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-blue), var(--light-blue));
    color: var(--white);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Sidebar */
.sidebar {
    background: var(--white);
    border-radius: 12px;
    padding: var(--space-lg);
    box-shadow: var(--shadow-sm);
}

.widget {
    margin-bottom: var(--space-lg);
}

.widget-title {
    font-size: 1.1rem;
    margin-bottom: var(--space-md);
    color: var(--primary-blue);
    font-weight: 600;
}

.widget ul {
    list-style: none;
}

.widget li {
    padding: var(--space-xs) 0;
    border-bottom: 1px solid var(--light-gray);
}

.widget li:last-child {
    border-bottom: none;
}

/* Tags */
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.tag {
    display: inline-block;
    background: var(--pale-blue);
    color: var(--dark-blue);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.875rem;
    transition: var(--transition);
}

.tag:hover {
    background: var(--primary-blue);
    color: var(--white);
}

/* Footer */
.site-footer {
    background: linear-gradient(135deg, var(--midnight-blue), var(--dark-blue));
    color: var(--white);
    padding: var(--space-xl) 0;
    margin-top: var(--space-xxl);
}

.footer-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-lg);
    text-align: center;
}

.footer-widgets {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
    text-align: left;
}

.footer-widget h3 {
    color: var(--sky-blue);
    margin-bottom: var(--space-sm);
}

.footer-widget a {
    color: var(--white);
    opacity: 0.8;
}

.footer-widget a:hover {
    opacity: 1;
    color: var(--sky-blue);
}

.footer-bottom {
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.8;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: var(--space-xs);
    margin-top: var(--space-xl);
}

.pagination a,
.pagination span {
    display: inline-block;
    padding: 8px 16px;
    background: var(--white);
    border: 1px solid var(--pale-blue);
    border-radius: 8px;
    color: var(--primary-blue);
    transition: var(--transition);
}

.pagination a:hover,
.pagination .current {
    background: var(--primary-blue);
    color: var(--white);
    border-color: var(--primary-blue);
}

/* Search Form */
.search-form {
    display: flex;
    gap: var(--space-xs);
}

.search-field {
    flex: 1;
    padding: 10px 16px;
    border: 1px solid var(--pale-blue);
    border-radius: 8px;
    font-size: 0.95rem;
    transition: var(--transition);
}

.search-field:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.search-submit {
    background: var(--primary-blue);
    color: var(--white);
    border: none;
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.search-submit:hover {
    background: var(--dark-blue);
}

/* Responsive Design */
@media (max-width: 768px) {
    html {
        font-size: 15px;
    }

    .header-container {
        flex-direction: column;
        gap: var(--space-md);
    }

    .main-navigation ul {
        flex-direction: column;
        gap: var(--space-sm);
        text-align: center;
    }

    .articles-grid {
        grid-template-columns: 1fr;
    }

    .article-title {
        font-size: 2rem;
    }

    .single-article {
        padding: var(--space-lg);
    }

    .footer-widgets {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    :root {
        --space-lg: 1.5rem;
        --space-xl: 2rem;
        --space-xxl: 3rem;
    }

    .site-content {
        padding: 0 var(--space-md);
    }

    .article-card-content {
        padding: var(--space-sm);
    }
}

/* Loading Animation */
@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

.loading {
    animation: pulse 1.5s ease-in-out infinite;
}

/* Accessibility */
.screen-reader-text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Print Styles */
@media print {
    .site-header,
    .site-footer,
    .sidebar,
    .pagination,
    .search-form {
        display: none;
    }

    .article-content {
        font-size: 12pt;
        line-height: 1.5;
    }
}