/*
Theme Name: DevOps Journal
Theme URI: https://github.com/yourusername/devops-journal
Author: Your Name
Author URI: https://yourwebsite.com
Description: A clean, minimal WordPress theme designed for DevOps engineers and cloud practitioners. Features a custom "Projects" post type for portfolio pieces, responsive design, and a professional aesthetic perfect for technical blogging.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.4
Requires PHP: 8.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: devops-journal
Tags: blog, portfolio, one-column, two-columns, custom-menu, featured-images, theme-options, translation-ready
*/

/* ==========================================================================
   CSS Reset & Base
   ========================================================================== */

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

:root {
    /* Colour Palette — professional dark/teal scheme */
    --color-primary: #0d9488;       /* Teal 600 */
    --color-primary-dark: #0f766e;  /* Teal 700 */
    --color-primary-light: #14b8a6; /* Teal 500 */
    --color-accent: #f59e0b;        /* Amber 500 */
    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;        /* Slate 50 */
    --color-bg-dark: #0f172a;       /* Slate 900 */
    --color-text: #1e293b;          /* Slate 800 */
    --color-text-light: #64748b;    /* Slate 500 */
    --color-text-inverse: #f1f5f9;  /* Slate 100 */
    --color-border: #e2e8f0;        /* Slate 200 */
    --color-code-bg: #1e293b;       /* Slate 800 */
    --color-code-text: #e2e8f0;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Layout */
    --max-width: 1200px;
    --content-width: 780px;
    --sidebar-width: 320px;
    --header-height: 72px;

    /* Borders & Shadows */
    --radius: 8px;
    --radius-sm: 4px;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition: 150ms ease;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.7;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ==========================================================================
   Typography
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.375rem; }
h4 { font-size: 1.125rem; }

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

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

a:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ==========================================================================
   Layout
   ========================================================================== */

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.site-content {
    flex: 1;
    padding: var(--spacing-3xl) 0;
}

.content-area {
    display: grid;
    grid-template-columns: 1fr var(--sidebar-width);
    gap: var(--spacing-3xl);
    align-items: start;
}

.content-area.full-width {
    grid-template-columns: 1fr;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.site-header {
    background: var(--color-bg-dark);
    color: var(--color-text-inverse);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-md);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
}

.site-branding a {
    color: var(--color-text-inverse);
    font-size: 1.375rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    text-decoration: none;
}

.site-branding a:hover {
    color: var(--color-primary-light);
    text-decoration: none;
}

.site-branding .site-tagline {
    font-size: 0.8rem;
    color: var(--color-text-light);
    font-weight: 400;
    margin-top: 2px;
}

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

.main-navigation a {
    color: var(--color-text-inverse);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    transition: background var(--transition), color var(--transition);
    text-decoration: none;
}

.main-navigation a:hover,
.main-navigation .current-menu-item a {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-primary-light);
    text-decoration: none;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-text-inverse);
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--spacing-sm);
    line-height: 1;
}

.menu-toggle .bar {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-inverse);
    margin: 5px 0;
    transition: transform var(--transition);
}

/* ==========================================================================
   Posts & Articles
   ========================================================================== */

.post-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    transition: box-shadow var(--transition), transform var(--transition);
}

.post-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.post-card .post-thumbnail {
    margin: calc(-1 * var(--spacing-xl));
    margin-bottom: var(--spacing-xl);
    border-radius: var(--radius) var(--radius) 0 0;
    overflow: hidden;
}

.post-card .post-thumbnail img {
    width: 100%;
    height: 220px;
    object-fit: cover;
}

.post-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

.post-meta a {
    color: var(--color-text-light);
}

.post-meta a:hover {
    color: var(--color-primary);
}

.post-card .entry-title {
    margin-bottom: var(--spacing-sm);
}

.post-card .entry-title a {
    color: var(--color-text);
    text-decoration: none;
}

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

.post-card .entry-summary {
    color: var(--color-text-light);
    line-height: 1.6;
}

.read-more {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.9rem;
    margin-top: var(--spacing-md);
}

.read-more:hover {
    text-decoration: none;
    gap: var(--spacing-sm);
}

/* Single Post */
.single-post-content {
    max-width: var(--content-width);
}

.entry-header {
    margin-bottom: var(--spacing-xl);
}

.entry-content {
    line-height: 1.8;
}

.entry-content h2,
.entry-content h3 {
    margin-top: var(--spacing-2xl);
}

.entry-content ul,
.entry-content ol {
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-xl);
}

.entry-content li {
    margin-bottom: var(--spacing-sm);
}

.entry-content blockquote {
    border-left: 4px solid var(--color-primary);
    padding: var(--spacing-md) var(--spacing-xl);
    margin: var(--spacing-xl) 0;
    background: var(--color-bg-alt);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-style: italic;
    color: var(--color-text-light);
}

/* Code Blocks */
.entry-content code {
    font-family: var(--font-mono);
    background: var(--color-bg-alt);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-size: 0.875em;
    color: var(--color-primary-dark);
}

.entry-content pre {
    background: var(--color-code-bg);
    color: var(--color-code-text);
    padding: var(--spacing-xl);
    border-radius: var(--radius);
    overflow-x: auto;
    margin: var(--spacing-xl) 0;
    line-height: 1.5;
}

.entry-content pre code {
    background: none;
    padding: 0;
    color: inherit;
    font-size: 0.875rem;
}

/* Tags */
.post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
}

.post-tags a {
    background: var(--color-bg-alt);
    color: var(--color-text-light);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 9999px;
    font-size: 0.8rem;
    font-weight: 500;
    transition: background var(--transition), color var(--transition);
}

.post-tags a:hover {
    background: var(--color-primary);
    color: white;
    text-decoration: none;
}

/* Post Navigation */
.post-navigation {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-3xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
}

.post-navigation .nav-label {
    font-size: 0.8rem;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-xs);
}

.post-navigation .nav-next {
    text-align: right;
}

/* ==========================================================================
   Projects (Custom Post Type)
   ========================================================================== */

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.project-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--spacing-xl);
    transition: box-shadow var(--transition), transform var(--transition);
}

.project-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.project-card .project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-md);
}

.project-card .tech-tag {
    background: var(--color-primary);
    color: white;
    padding: 2px 10px;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.project-card .project-links {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.project-card .project-links a {
    font-size: 0.85rem;
    font-weight: 600;
}

/* ==========================================================================
   Page Templates
   ========================================================================== */

.page-header {
    margin-bottom: var(--spacing-2xl);
}

.page-header .page-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.page-header .page-subtitle {
    color: var(--color-text-light);
    font-size: 1.125rem;
}

/* About Page */
.about-intro {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: var(--spacing-2xl);
    align-items: start;
    margin-bottom: var(--spacing-2xl);
}

.about-photo {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--color-primary);
}

.skills-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    list-style: none;
    padding: 0;
}

.skills-list li {
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 9999px;
    font-size: 0.85rem;
    font-weight: 500;
}

/* ==========================================================================
   Sidebar & Widgets
   ========================================================================== */

.widget-area {
    position: sticky;
    top: calc(var(--header-height) + var(--spacing-xl));
}

.widget {
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.widget-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-primary);
}

.widget ul {
    list-style: none;
    padding: 0;
}

.widget ul li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-border);
}

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

.widget ul li a {
    color: var(--color-text);
    font-size: 0.9rem;
}

.widget ul li a:hover {
    color: var(--color-primary);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
    background: var(--color-bg-dark);
    color: var(--color-text-inverse);
    padding: var(--spacing-2xl) 0;
    margin-top: auto;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-copyright {
    font-size: 0.85rem;
    color: var(--color-text-light);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-links a {
    color: var(--color-text-light);
    font-size: 0.9rem;
    transition: color var(--transition);
    text-decoration: none;
}

.social-links a:hover {
    color: var(--color-primary-light);
}

/* ==========================================================================
   Pagination
   ========================================================================== */

.pagination {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-2xl);
}

.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    transition: background var(--transition), color var(--transition);
}

.pagination a {
    background: var(--color-bg-alt);
    color: var(--color-text);
}

.pagination a:hover {
    background: var(--color-primary);
    color: white;
    text-decoration: none;
}

.pagination .current {
    background: var(--color-primary);
    color: white;
}

/* ==========================================================================
   404 Page
   ========================================================================== */

.error-404 {
    text-align: center;
    padding: var(--spacing-3xl) 0;
}

.error-404 .error-code {
    font-size: 8rem;
    font-weight: 800;
    color: var(--color-border);
    line-height: 1;
}

.error-404 h1 {
    margin-top: var(--spacing-md);
}

.error-404 p {
    color: var(--color-text-light);
    max-width: 500px;
    margin: var(--spacing-md) auto;
}

.error-404 .search-form {
    max-width: 400px;
    margin: var(--spacing-xl) auto 0;
}

/* ==========================================================================
   Forms
   ========================================================================== */

.search-form {
    display: flex;
    gap: var(--spacing-sm);
}

.search-form input[type="search"] {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.9rem;
}

.search-form input[type="search"]:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.1);
}

.search-form button {
    background: var(--color-primary);
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition);
}

.search-form button:hover {
    background: var(--color-primary-dark);
}

/* Comments */
.comment-form input,
.comment-form textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
}

.comment-form textarea {
    min-height: 150px;
    resize: vertical;
}

.comment-form input:focus,
.comment-form textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.1);
}

.comment-form .submit {
    background: var(--color-primary);
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-xl);
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition);
}

.comment-form .submit:hover {
    background: var(--color-primary-dark);
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

@media (max-width: 1024px) {
    .content-area {
        grid-template-columns: 1fr;
    }

    .widget-area {
        position: static;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 64px;
    }

    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }

    .container {
        padding: 0 var(--spacing-md);
    }

    .site-content {
        padding: var(--spacing-xl) 0;
    }

    /* Mobile Navigation */
    .menu-toggle {
        display: block;
    }

    .main-navigation {
        display: none;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--color-bg-dark);
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        padding: var(--spacing-md);
        box-shadow: var(--shadow-lg);
    }

    .main-navigation.toggled {
        display: block;
    }

    .main-navigation ul {
        flex-direction: column;
        gap: 0;
    }

    .main-navigation a {
        display: block;
        padding: var(--spacing-md);
    }

    /* About page responsive */
    .about-intro {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .about-photo {
        margin: 0 auto;
    }

    /* Projects grid responsive */
    .projects-grid {
        grid-template-columns: 1fr;
    }

    /* Post navigation responsive */
    .post-navigation {
        grid-template-columns: 1fr;
    }

    .post-navigation .nav-next {
        text-align: left;
    }

    /* Footer responsive */
    .footer-inner {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .post-card {
        padding: var(--spacing-md);
    }

    .post-card .post-thumbnail {
        margin: calc(-1 * var(--spacing-md));
        margin-bottom: var(--spacing-md);
    }

    .page-header .page-title {
        font-size: 2rem;
    }
}