/*
Theme Name: MathEase
Theme URI: https://mathease.com
Author: MathEase Team
Author URI: https://mathease.com
Description: A modern, responsive WordPress theme designed for educational and calculator-focused websites. Features a clean design with gradient backgrounds and scientific calculator integration.
Version: 1.0.0
Requires at least: 5.8
Tested up to: 6.4
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: mathease
Tags: education, calculator, responsive, modern, clean, accessibility-ready, custom-menu, featured-images, threaded-comments, translation-ready
*/

/* ============================================
   MathEase - Modern Calculator Website Styles
   ============================================ */

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

:root {
    /* Color Palette */
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --secondary-color: #10b981;
    --accent-color: #f59e0b;
    --danger-color: #ef4444;
    
    /* Neutral Colors */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--gray-800);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    min-height: 100vh;
}

/* WordPress Core Styles */
.alignnone {
    margin: var(--spacing-md) 0;
}

.aligncenter {
    display: block;
    margin: var(--spacing-md) auto;
}

.alignleft {
    float: left;
    margin: var(--spacing-xs) var(--spacing-md) var(--spacing-xs) 0;
}

.alignright {
    float: right;
    margin: var(--spacing-xs) 0 var(--spacing-xs) var(--spacing-md);
}

.wp-caption {
    max-width: 100%;
}

.wp-caption-text {
    font-size: 0.875rem;
    color: var(--gray-600);
    text-align: center;
    padding: var(--spacing-xs);
}

.gallery-caption {
    display: block;
    font-size: 0.875rem;
    color: var(--gray-600);
}

.sticky {
    /* Sticky post styles */
}

.bypostauthor {
    /* Post author styles */
}

/* Header Styles */
.main-header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1,
.logo .site-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -0.5px;
    margin: 0;
}

.logo a {
    text-decoration: none;
    color: inherit;
}

.tagline,
.site-description {
    display: block;
    font-size: 0.75rem;
    color: var(--gray-600);
    margin-top: -0.25rem;
}

.main-nav ul {
    display: flex;
    gap: var(--spacing-md);
    list-style: none;
    margin: 0;
    padding: 0;
}

.main-nav a {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.main-nav a:hover,
.main-nav .current-menu-item > a,
.main-nav .current_page_item > a {
    background: var(--gray-100);
    color: var(--primary-color);
}

.main-nav .current-menu-item > a,
.main-nav .current_page_item > a {
    background: var(--primary-color);
    color: white;
}

/* Main Content */
.main-content {
    padding: var(--spacing-xl) var(--spacing-sm);
}

.content-wrapper {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    gap: var(--spacing-lg);
}

.primary-content {
    flex: 1;
    min-width: 0;
}

/* Post and Page Styles */
.post,
.page {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

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

.entry-title {
    font-size: 2.5rem;
    color: var(--gray-900);
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

.entry-title a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s ease;
}

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

.entry-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-bottom: var(--spacing-sm);
}

.entry-meta a {
    color: var(--primary-color);
    text-decoration: none;
}

.entry-meta a:hover {
    text-decoration: underline;
}

.entry-content,
.page-content {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--gray-700);
}

.entry-content h2,
.page-content h2 {
    font-size: 1.875rem;
    color: var(--gray-900);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.entry-content h3,
.page-content h3 {
    font-size: 1.5rem;
    color: var(--gray-900);
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.entry-content p,
.page-content p {
    margin-bottom: var(--spacing-md);
}

.entry-content ul,
.entry-content ol,
.page-content ul,
.page-content ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

.entry-content li,
.page-content li {
    margin-bottom: var(--spacing-xs);
}

.entry-content img,
.page-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
}

.entry-content blockquote,
.page-content blockquote {
    border-left: 4px solid var(--primary-color);
    padding-left: var(--spacing-md);
    margin: var(--spacing-lg) 0;
    font-style: italic;
    color: var(--gray-600);
}

.entry-footer {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--gray-200);
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    font-size: 0.875rem;
}

.cat-links,
.tags-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.cat-links a,
.tags-links a {
    background: var(--gray-100);
    color: var(--gray-700);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: all 0.2s ease;
}

.cat-links a:hover,
.tags-links a:hover {
    background: var(--primary-color);
    color: white;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xs);
    margin: var(--spacing-xl) 0;
}

.page-numbers {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: white;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    color: var(--gray-700);
    text-decoration: none;
    transition: all 0.2s ease;
}

.page-numbers:hover,
.page-numbers.current {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Comments */
.comments-area {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-xl);
    margin-top: var(--spacing-lg);
}

.comments-title {
    font-size: 1.875rem;
    color: var(--gray-900);
    margin-bottom: var(--spacing-lg);
}

.comment-list {
    list-style: none;
    padding: 0;
}

.comment {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--gray-200);
}

.comment:last-child {
    border-bottom: none;
}

.comment-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
}

.comment-author img {
    border-radius: 50%;
}

.comment-metadata {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-bottom: var(--spacing-sm);
}

.comment-metadata a {
    color: inherit;
    text-decoration: none;
}

.comment-content {
    color: var(--gray-700);
    line-height: 1.6;
}

.reply {
    margin-top: var(--spacing-sm);
}

.comment-reply-link {
    font-size: 0.875rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.comment-reply-link:hover {
    text-decoration: underline;
}

/* Comment Form */
.comment-respond {
    margin-top: var(--spacing-xl);
}

.comment-form {
    display: grid;
    gap: var(--spacing-md);
}

.comment-form-comment label,
.comment-form-author label,
.comment-form-email label,
.comment-form-url label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--gray-700);
}

.comment-form input[type="text"],
.comment-form input[type="email"],
.comment-form input[type="url"],
.comment-form textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 1rem;
}

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

.form-submit {
    margin: 0;
}

.submit {
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s ease;
}

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

/* Search Results */
.search-results .entry-summary {
    font-size: 0.9375rem;
    color: var(--gray-600);
    margin-top: var(--spacing-sm);
}

.search-no-results {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-xl);
    text-align: center;
}

.search-form {
    display: flex;
    gap: var(--spacing-xs);
    max-width: 600px;
    margin: var(--spacing-lg) auto 0;
}

.search-field {
    flex: 1;
    padding: var(--spacing-sm);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 1rem;
}

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

/* Footer */
.main-footer {
    background: rgba(17, 24, 39, 0.95);
    color: var(--gray-300);
    padding: var(--spacing-xl) var(--spacing-lg);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-section h4,
.footer-widget h3 {
    color: white;
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
}

.footer-section p {
    font-size: 0.875rem;
    line-height: 1.6;
}

.footer-section ul,
.footer-widget ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-section li,
.footer-widget li {
    margin-bottom: var(--spacing-xs);
}

.footer-section a,
.footer-widget a {
    color: var(--gray-400);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s ease;
}

.footer-section a:hover,
.footer-widget a:hover {
    color: var(--primary-light);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--gray-700);
    font-size: 0.875rem;
    color: var(--gray-500);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .content-wrapper {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .header-container {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        text-align: left;
    }
    
    .logo {
        flex: 1;
    }
    
    /* Mobile Menu Toggle */
    .mobile-menu-toggle {
        display: block;
        background: none;
        border: none;
        cursor: pointer;
        padding: var(--spacing-xs);
        z-index: 101;
    }
    
    .mobile-menu-toggle .menu-icon {
        display: block;
        width: 24px;
        height: 2px;
        background: var(--gray-700);
        position: relative;
        transition: background 0.3s ease;
    }
    
    .mobile-menu-toggle .menu-icon::before,
    .mobile-menu-toggle .menu-icon::after {
        content: '';
        position: absolute;
        width: 100%;
        height: 2px;
        background: var(--gray-700);
        transition: transform 0.3s ease;
    }
    
    .mobile-menu-toggle .menu-icon::before {
        top: -8px;
    }
    
    .mobile-menu-toggle .menu-icon::after {
        bottom: -8px;
    }
    
    .mobile-menu-toggle[aria-expanded="true"] .menu-icon {
        background: transparent;
    }
    
    .mobile-menu-toggle[aria-expanded="true"] .menu-icon::before {
        transform: rotate(45deg) translateY(8px);
    }
    
    .mobile-menu-toggle[aria-expanded="true"] .menu-icon::after {
        transform: rotate(-45deg) translateY(-8px);
    }
    
    /* Mobile Navigation */
    .main-nav {
        position: fixed;
        top: 0;
        left: -100%;
        width: 280px;
        height: 100vh;
        background: white;
        box-shadow: var(--shadow-xl);
        padding: calc(var(--spacing-xl) + 60px) var(--spacing-lg) var(--spacing-lg);
        transition: left 0.3s ease;
        z-index: 100;
        overflow-y: auto;
    }
    
    .main-nav.toggled {
        left: 0;
    }
    
    .main-nav ul {
        flex-direction: column;
        gap: 0;
    }
    
    .main-nav li {
        border-bottom: 1px solid var(--gray-200);
    }
    
    .main-nav a {
        display: block;
        padding: var(--spacing-md) 0;
    }
    
    /* Overlay when mobile menu is open */
    body.mobile-menu-open::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 99;
    }
    
    .entry-title {
        font-size: 2rem;
    }
    
    .post,
    .page,
    .comments-area {
        padding: var(--spacing-lg);
    }
}

@media (min-width: 769px) {
    .mobile-menu-toggle {
        display: none;
    }
}

@media (max-width: 480px) {
    .entry-title {
        font-size: 1.5rem;
    }
    
    .entry-content,
    .page-content {
        font-size: 1rem;
    }
}

/* Accessibility */
.screen-reader-text {
    clip: rect(1px, 1px, 1px, 1px);
    position: absolute !important;
    height: 1px;
    width: 1px;
    overflow: hidden;
    word-wrap: normal !important;
}

.screen-reader-text:focus {
    background-color: var(--gray-100);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
    clip: auto !important;
    color: var(--primary-color);
    display: block;
    font-size: 0.875rem;
    font-weight: 700;
    height: auto;
    left: 5px;
    line-height: normal;
    padding: 15px 23px 14px;
    text-decoration: none;
    top: 5px;
    width: auto;
    z-index: 100000;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.post,
.page,
.comments-area {
    animation: fadeIn 0.5s ease-out;
}