/*
Theme Name: Hakan Arslan Blog
Theme URI: https://hakanarslan.net
Author: Hakan Arslan
Author URI: https://hakanarslan.net
Description: A minimalist blog theme for Hakan Arslan. Features dark mode, sidebar navigation, and clean typography.
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: hakanarslan-dev
Tags: blog, one-column, custom-menu, dark-mode, minimalist
*/

/* ===================================
   CSS Variables / Design Tokens
   =================================== */
:root {
    /* Colors - Dark Theme (Default) */
    --color-bg: #1a1b26;
    --color-bg-secondary: #111111;
    --color-bg-tertiary: #1e202e;
    --color-text: #ededed;
    --color-text-secondary: #a0a0a0;
    --color-text-muted: #666666;
    --color-accent: #8e79b7;
    --color-accent-hover: #a08cc6;
    --color-border: #262626;
    --color-link: #ededed;
    --color-link-hover: #8e79b7;

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

    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 2rem;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-12: 3rem;
    --space-16: 4rem;

    /* Layout */
    --sidebar-width: 200px;
    --content-max-width: 680px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
}

/* Light Theme */
[data-theme="light"] {
    --color-bg: #fdf6e3;
    --color-bg-secondary: #f9fafb;
    --color-bg-tertiary: #eee8d5;
    --color-text: #111827;
    --color-text-secondary: #4b5563;
    --color-text-muted: #9ca3af;
    --color-border: #e5e7eb;
    --color-link: #111827;
}

/* ===================================
   Reset & Base Styles
   =================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
}

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

a:hover {
    color: var(--color-link-hover);
}

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

ul,
ol {
    list-style: none;
}

/* ===================================
   Layout
   =================================== */
.site-wrapper {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.site-sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    padding: var(--space-8);
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--color-border);
    background-color: var(--color-bg);
    z-index: 100;
}

.site-branding {
    margin-bottom: var(--space-8);
}

.site-title {
    font-size: var(--text-base);
    font-weight: 600;
    margin-bottom: var(--space-1);
}

.site-title a {
    color: var(--color-text);
}

.site-description {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

/* Dark/Light Mode Logos */
.custom-logo-link {
    display: block;
}

.custom-logo-link img {
    max-height: 62px;
    width: auto;
}

.logo-dark,
.logo-light {
    max-height: 62px;
    width: auto;
}

/* Default state: assume dark theme, hide light logo */
.logo-light {
    display: none;
}

.logo-dark {
    display: block;
}

/* Dark theme: show dark logo, hide light logo */
html[data-theme="dark"] .logo-dark,
:root[data-theme="dark"] .logo-dark {
    display: block !important;
}

html[data-theme="dark"] .logo-light,
:root[data-theme="dark"] .logo-light {
    display: none !important;
}

/* Light theme: show light logo, hide dark logo */
html[data-theme="light"] .logo-dark,
:root[data-theme="light"] .logo-dark {
    display: none !important;
}

html[data-theme="light"] .logo-light,
:root[data-theme="light"] .logo-light {
    display: block !important;
}

/* Animated SVG Logo */
.animated-logo-link {
    display: block;
}

.animated-logo-link #animated-logo {
    height: 50px;
    width: auto;
}

/* Default state and transitions */
.animated-logo-link .logo-bracket,
.animated-logo-link .logo-letter,
.animated-logo-link .logo-exclaim {
    transition: fill 0.4s ease, transform 0.4s ease;
}

/* Brackets always purple in both modes */
.animated-logo-link .logo-bracket {
    fill: #8e79b7;
}

/* Default (dark theme) - ha! text white */
.animated-logo-link .logo-letter,
.animated-logo-link .logo-exclaim {
    fill: #ffffff;
}

/* Dark theme */
[data-theme="dark"] .animated-logo-link .logo-bracket {
    fill: #8e79b7;
}

[data-theme="dark"] .animated-logo-link .logo-letter,
[data-theme="dark"] .animated-logo-link .logo-exclaim {
    fill: #ffffff;
}

/* Light theme */
[data-theme="light"] .animated-logo-link .logo-bracket {
    fill: #8e79b7;
}

[data-theme="light"] .animated-logo-link .logo-letter,
[data-theme="light"] .animated-logo-link .logo-exclaim {
    fill: #0b1623;
}

/* Exclamation mark rotation on hover */
.animated-logo-link .logo-exclaim {
    transform-origin: bottom right;
}

.animated-logo-link:hover .logo-exclaim {
    transform: rotate(12deg) translate(-2px, 7px);
}

/* Navigation */
.main-navigation {
    flex: 1;
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.nav-menu li a {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-3);
    border-radius: 6px;
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.nav-menu li a:hover,
.nav-menu li.current-menu-item a {
    color: var(--color-text);
    background-color: var(--color-bg-tertiary);
}

.nav-menu li a .nav-icon {
    font-size: var(--text-base);
    color: var(--color-text-muted);
    font-weight: 300;
    opacity: 0.6;
    transition: all var(--transition-fast);
}

.nav-menu li a:hover .nav-icon,
.nav-menu li.current-menu-item a .nav-icon {
    color: var(--color-accent);
    opacity: 1;
}

/* Social Links */
.social-links {
    margin-top: auto;
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-border);
}

.social-links ul {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
}

.social-links a {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-text-muted);
    font-size: var(--text-sm);
    transition: color var(--transition-fast);
}

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

.social-links a i {
    font-size: var(--text-base);
    width: 1.25em;
    text-align: center;
}

.social-links a .social-text {
    font-size: var(--text-sm);
}

/* Theme Toggle */
.theme-toggle {
    margin-top: var(--space-4);
}

.theme-toggle button {
    background: none;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    padding: var(--space-2) var(--space-3);
    border-radius: 6px;
    cursor: pointer;
    font-size: var(--text-sm);
    width: 100%;
    transition: all var(--transition-fast);
}

.theme-toggle button:hover {
    border-color: var(--color-text-muted);
    color: var(--color-text);
}

/* Main Content */
.site-main {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: var(--space-12) var(--space-8);
}

.content-wrapper {
    max-width: var(--content-max-width);
    margin: 0 auto;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    position: fixed;
    top: var(--space-4);
    left: var(--space-4);
    z-index: 200;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    padding: var(--space-2) var(--space-3);
    border-radius: 6px;
    cursor: pointer;
    font-size: var(--text-sm);
}

/* ===================================
   Homepage / Post List
   =================================== */
.page-header {
    margin-bottom: var(--space-8);
}

.page-title {
    font-size: var(--text-2xl);
    font-weight: 600;
    margin-bottom: var(--space-2);
}

.page-description {
    color: var(--color-text-secondary);
    font-size: var(--text-base);
}

/* Post List by Year */
.posts-by-year {
    margin-bottom: var(--space-8);
}

.year-heading {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-muted);
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-2);
    border-bottom: 1px solid var(--color-border);
}

.post-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.post-item {
    display: flex;
    align-items: baseline;
    gap: var(--space-4);
    padding: var(--space-2) 0;
    transition: background-color var(--transition-fast);
}

.post-item:hover {
    background-color: var(--color-bg-tertiary);
    margin-left: calc(-1 * var(--space-2));
    margin-right: calc(-1 * var(--space-2));
    padding-left: var(--space-2);
    padding-right: var(--space-2);
    border-radius: 4px;
}

.post-date {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    font-family: var(--font-mono);
    min-width: 80px;
    flex-shrink: 0;
}

.post-title-link {
    font-size: var(--text-base);
    color: var(--color-text);
    font-weight: 400;
}

.post-item:hover .post-title-link {
    color: var(--color-accent);
}

/* Tags */
.post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-top: var(--space-2);
}

.tag-link {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    background-color: var(--color-bg-tertiary);
    padding: var(--space-1) var(--space-2);
    border-radius: 4px;
    transition: all var(--transition-fast);
}

.tag-link:hover {
    background-color: var(--color-accent);
    color: var(--color-bg);
}

/* ===================================
   Single Post
   =================================== */
.single-post-header {
    margin-bottom: var(--space-8);
}

.single-post-title {
    font-size: var(--text-3xl);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--space-4);
}

.post-meta {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
}

.post-meta time {
    font-family: var(--font-mono);
}

/* Post Content */
.post-content {
    font-size: var(--text-base);
    line-height: 1.8;
}

.post-content h2 {
    font-size: var(--text-xl);
    font-weight: 600;
    margin-top: var(--space-8);
    margin-bottom: var(--space-4);
}

.post-content h3 {
    font-size: var(--text-lg);
    font-weight: 600;
    margin-top: var(--space-6);
    margin-bottom: var(--space-3);
}

.post-content p {
    margin-bottom: var(--space-4);
}

.post-content a {
    color: var(--color-accent);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.post-content a:hover {
    color: var(--color-accent-hover);
}

.post-content ul,
.post-content ol {
    margin-bottom: var(--space-4);
    padding-left: var(--space-6);
}

.post-content ul {
    list-style: disc;
}

.post-content ol {
    list-style: decimal;
}

.post-content li {
    margin-bottom: var(--space-2);
}

.post-content blockquote {
    border-left: 3px solid var(--color-accent);
    padding-left: var(--space-4);
    margin: var(--space-6) 0;
    color: var(--color-text-secondary);
    font-style: italic;
}

.post-content pre {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: var(--space-4);
    overflow-x: auto;
    margin: var(--space-6) 0;
    font-family: var(--font-mono);
    font-size: var(--text-sm);
}

.post-content code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    background-color: var(--color-bg-tertiary);
    padding: 0.2em 0.4em;
    border-radius: 4px;
}

.post-content pre code {
    background: none;
    padding: 0;
}

.post-content img {
    border-radius: 8px;
    margin: var(--space-6) 0;
}

/* Post Navigation */
.post-navigation {
    margin-top: var(--space-12);
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    gap: var(--space-4);
}

.post-navigation a {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

.post-navigation a:hover {
    color: var(--color-text);
}

/* Comments Section */
.comments-section {
    margin-top: var(--space-12);
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-border);
}

.comments-section #disqus_thread {
    margin-top: var(--space-4);
}

/* ===================================
   Archive / Category Pages
   =================================== */
.archive-header {
    margin-bottom: var(--space-8);
}

.archive-title {
    font-size: var(--text-2xl);
    font-weight: 600;
}

.archive-description {
    color: var(--color-text-secondary);
    margin-top: var(--space-2);
}

/* ===================================
   404 Page
   =================================== */
.error-404 {
    text-align: center;
    padding: var(--space-16) 0;
}

.error-404 h1 {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-4);
}

.error-404 p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-6);
}

.error-404 .button {
    display: inline-block;
    background-color: var(--color-accent);
    color: var(--color-bg);
    padding: var(--space-3) var(--space-6);
    border-radius: 6px;
    font-weight: 500;
    transition: background-color var(--transition-fast);
}

.error-404 .button:hover {
    background-color: var(--color-accent-hover);
    color: var(--color-bg);
}

/* ===================================
   Footer
   =================================== */
.site-footer {
    margin-top: var(--space-16);
    padding: var(--space-8) 0;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.site-footer p {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 768px) {
    :root {
        --sidebar-width: 280px;
    }

    .menu-toggle {
        display: block;
    }

    .site-sidebar {
        transform: translateX(-100%);
        transition: transform var(--transition-base);
    }

    .site-sidebar.is-open {
        transform: translateX(0);
    }

    .site-main {
        margin-left: 0;
        padding: var(--space-16) var(--space-4) var(--space-8);
    }

    .post-item {
        flex-direction: column;
        gap: var(--space-1);
    }

    .post-date {
        min-width: auto;
    }

    .single-post-title {
        font-size: var(--text-2xl);
    }

    /* Overlay when sidebar is open */
    .sidebar-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background-color: rgba(0, 0, 0, 0.5);
        z-index: 99;
    }

    .sidebar-overlay.is-visible {
        display: block;
    }
}

@media (max-width: 480px) {
    .site-main {
        padding: var(--space-16) var(--space-3) var(--space-6);
    }

    .page-title,
    .archive-title {
        font-size: var(--text-xl);
    }

    .single-post-title {
        font-size: var(--text-xl);
    }
}

/* ===================================
   Utility Classes
   =================================== */
.screen-reader-text {
    border: 0;
    clip: rect(1px, 1px, 1px, 1px);
    clip-path: inset(50%);
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    width: 1px;
    word-wrap: normal !important;
}

.alignleft {
    float: left;
    margin-right: var(--space-4);
}

.alignright {
    float: right;
    margin-left: var(--space-4);
}

.aligncenter {
    display: block;
    margin-left: auto;
    margin-right: auto;
}