/*
Theme Name: XooPress Lite
Theme URI: https://xoopress.org/
Author: XooPress Team
Author URI: https://xoopress.org/
Description: A clean, modern light theme with excellent readability and smooth interactions. The official default theme for XooPress.
Version: 1.0.0
License: GPL-3.0-or-later
License URI: https://www.gnu.org/licenses/gpl-3.0.html
Tags: light, minimal, modern, responsive, accessibility-ready, one-column, two-columns, blog, portfolio
Text Domain: xoopress-lite
*/

/* ==========================================================================
   CSS Variables & Reset
   ========================================================================== */

:root {
    /* Light Mode Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #f1f3f5;
    
    --text-primary: #212529;
    --text-secondary: #495057;
    --text-muted: #6c757d;
    --text-light: #adb5bd;
    
    --border-light: #e9ecef;
    --border-medium: #dee2e6;
    
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --primary-light: #818cf8;
    --primary-bg: rgba(79, 70, 229, 0.08);
    
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    
    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Layout */
    --container-width: 1280px;
    --header-height: 70px;
}

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

/* ==========================================================================
   Base Styles
   ========================================================================== */

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    min-height: 100vh;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-6);
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-4);
    }
}

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

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.025em;
    margin-bottom: var(--spacing-4);
    color: var(--text-primary);
}

h1 {
    font-size: 3rem;
}

h2 {
    font-size: 2.25rem;
    position: relative;
    display: inline-block;
}

h2::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 50px;
    height: 3px;
    background: var(--primary);
    border-radius: var(--radius-full);
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: var(--spacing-4);
    color: var(--text-secondary);
}

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

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

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

.site-header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: var(--header-height);
    gap: var(--spacing-4);
}

.site-branding {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.site-logo {
    height: 40px;
    width: auto;
    transition: var(--transition-base);
}

.site-logo:hover {
    transform: scale(1.05);
}

.site-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0;
}

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

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

.main-navigation ul {
    display: flex;
    gap: var(--spacing-2);
    list-style: none;
}

.main-navigation a {
    display: inline-block;
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: var(--radius-full);
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition-base);
}

.main-navigation a:hover {
    background: var(--primary-bg);
    color: var(--primary);
    text-decoration: none;
}

.main-navigation .current-menu-item a {
    background: var(--primary-bg);
    color: var(--primary);
    font-weight: 700;
}

.language-switcher select {
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--radius-full);
    border: 1px solid var(--border-medium);
    background: var(--bg-primary);
    cursor: pointer;
    font-size: 0.875rem;
    transition: var(--transition-base);
}

.language-switcher select:hover {
    border-color: var(--primary);
}

/* ==========================================================================
   Mobile Menu
   ========================================================================== */

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-2);
}

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    margin: 5px 0;
    transition: var(--transition-base);
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }
    
    .main-navigation {
        position: fixed;
        top: var(--header-height);
        left: -100%;
        width: 100%;
        height: calc(100vh - var(--header-height));
        background: var(--bg-primary);
        transition: var(--transition-base);
        padding: var(--spacing-6);
        overflow-y: auto;
    }
    
    .main-navigation.active {
        left: 0;
    }
    
    .main-navigation ul {
        flex-direction: column;
        gap: var(--spacing-4);
    }
    
    .main-navigation a {
        display: block;
        padding: var(--spacing-3);
        text-align: center;
    }
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
    text-align: center;
    padding: var(--spacing-16) var(--spacing-6);
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    border-radius: var(--radius-2xl);
    margin-bottom: var(--spacing-12);
}

.hero-logo {
    height: 80px;
    width: auto;
    margin-bottom: var(--spacing-6);
    animation: fadeInUp 0.6s ease-out;
}

.hero h1 {
    animation: fadeInUp 0.6s ease-out 0.1s both;
}

.hero p {
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    font-size: 1.125rem;
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.version {
    display: inline-block;
    background: var(--primary-bg);
    color: var(--primary);
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-family: monospace;
    animation: fadeInUp 0.6s ease-out 0.3s both;
}

.actions {
    display: flex;
    gap: var(--spacing-4);
    justify-content: center;
    margin-top: var(--spacing-6);
    animation: fadeInUp 0.6s ease-out 0.4s both;
}

/* ==========================================================================
   Features Grid
   ========================================================================== */

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-16);
}

.feature-card {
    background: var(--bg-secondary);
    padding: var(--spacing-8);
    border-radius: var(--radius-xl);
    text-align: center;
    transition: var(--transition-base);
    border: 1px solid var(--border-light);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.feature-card h3 {
    margin-bottom: var(--spacing-3);
    color: var(--text-primary);
}

.feature-card p {
    margin-bottom: 0;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    border-radius: var(--radius-full);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-base);
    cursor: pointer;
    border: none;
    font-size: 0.9375rem;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    text-decoration: none;
}

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

.btn-secondary:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
    text-decoration: none;
}

/* ==========================================================================
   Blog Posts
   ========================================================================== */

.post-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: var(--spacing-8);
    margin-bottom: var(--spacing-6);
    transition: var(--transition-base);
}

.post-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.entry-header {
    margin-bottom: var(--spacing-4);
}

.entry-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-2);
}

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

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

.entry-meta {
    color: var(--text-muted);
    font-size: 0.875rem;
    display: flex;
    gap: var(--spacing-4);
    align-items: center;
    flex-wrap: wrap;
}

.entry-meta span {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
}

.entry-summary {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-4);
}

.post-full {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-10);
    box-shadow: var(--shadow-md);
}

.entry-content {
    font-size: 1.0625rem;
    line-height: 1.8;
}

.entry-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    margin: var(--spacing-6) 0;
}

.entry-content blockquote {
    border-left: 4px solid var(--primary);
    background: var(--bg-secondary);
    padding: var(--spacing-4) var(--spacing-6);
    margin: var(--spacing-6) 0;
    font-style: italic;
    border-radius: var(--radius-lg);
}

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

.site-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-light);
    text-align: center;
    padding: var(--spacing-8) 0;
    margin-top: var(--spacing-16);
}

.footer-menu {
    margin-bottom: 0.75rem;
}

.footer-menu-link {
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition-base);
}

.footer-menu-link:hover {
    color: var(--primary-light);
    text-decoration: none;
}

.footer-menu-sep {
    margin: 0 0.5rem;
    color: var(--border-medium);
}

.site-footer p {
    margin-bottom: 0;
    color: var(--text-muted);
}

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

input,
textarea,
select {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    transition: var(--transition-base);
    background: var(--bg-primary);
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-bg);
}

label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-2);
    color: var(--text-primary);
}

/* ==========================================================================
   Animations
   ========================================================================== */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card {
    animation: fadeInUp 0.6s ease-out backwards;
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }

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

@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
    
    .hero {
        padding: var(--spacing-10) var(--spacing-4);
    }
    
    .features {
        grid-template-columns: 1fr;
    }
    
    .actions {
        flex-direction: column;
        align-items: center;
    }
    
    .post-full {
        padding: var(--spacing-6);
    }
}

/* Print Styles */
@media print {
    .site-header,
    .site-footer,
    .actions,
    .language-switcher {
        display: none;
    }
}

/* ==========================================================================
   Post Navigation (Pagination)
   ========================================================================== */

.post-navigation {
    margin: var(--spacing-12) 0;
    padding: var(--spacing-6) 0;
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
}

.nav-links {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-6);
}

.nav-previous,
.nav-next {
    flex: 1;
    max-width: 45%;
}

.nav-previous {
    text-align: left;
}

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

.nav-subtitle {
    display: block;
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-2);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-title {
    display: block;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.4;
    transition: var(--transition-base);
}

.nav-previous a,
.nav-next a {
    text-decoration: none;
    display: block;
    padding: var(--spacing-4);
    border-radius: var(--radius-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    transition: var(--transition-base);
}

.nav-previous a:hover,
.nav-next a:hover {
    background: var(--primary-bg);
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.nav-previous a:hover .nav-title {
    color: var(--primary);
}

.nav-next a:hover .nav-title {
    color: var(--primary);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        flex-direction: column;
        gap: var(--spacing-4);
    }
    
    .nav-previous,
    .nav-next {
        max-width: 100%;
    }
    
    .nav-previous {
        text-align: left;
    }
    
    .nav-next {
        text-align: left;
    }
}