/*
Theme Name: URFX Blog Theme
Theme URI: https://urfx.com
Author: URFX
Author URI: https://urfx.com
Description: A sleek, dark-themed WordPress blog theme with lime green accents. Features a featured post hero, category filters, and a modern 3-column grid layout. Designed for trading and finance blogs.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.5
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: urfx-blog
Tags: blog, dark, one-column, three-columns, custom-menu, featured-images, translation-ready
*/

/* ============================================
   CSS RESET & BASE
   ============================================ */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --color-bg-primary: #0a0a0a;
    --color-bg-secondary: #111111;
    --color-bg-card: #1a1a1a;
    --color-bg-card-hover: #222222;
    --color-accent: #a3e635;
    --color-accent-dark: #84cc16;
    --color-accent-glow: rgba(163, 230, 53, 0.15);
    --color-text-primary: #ffffff;
    --color-text-secondary: #a1a1aa;
    --color-text-muted: #71717a;
    --color-border: #2a2a2a;
    --color-border-light: #333333;
    --color-tag-bg: rgba(163, 230, 53, 0.1);
    --color-tag-text: #a3e635;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-script: 'Playfair Display', Georgia, 'Times New Roman', serif;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;
    --spacing-4xl: 96px;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;

    /* Container */
    --container-max: 1200px;
    --container-padding: 20px;
}

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

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

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

ul, ol {
    list-style: none;
}

/* ============================================
   CONTAINER
   ============================================ */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ============================================
   BACKGROUND DECORATION - Diagonal Lines
   ============================================ */
.bg-decoration {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.bg-decoration::before,
.bg-decoration::after {
    content: '';
    position: absolute;
    width: 2px;
    height: 200%;
    background: linear-gradient(
        to bottom,
        transparent 0%,
        rgba(163, 230, 53, 0.08) 30%,
        rgba(163, 230, 53, 0.15) 50%,
        rgba(163, 230, 53, 0.08) 70%,
        transparent 100%
    );
    transform: rotate(-35deg);
    transform-origin: top center;
}

.bg-decoration::before {
    right: 5%;
    top: -50%;
}

.bg-decoration::after {
    right: 10%;
    top: -40%;
}

.bg-line-3 {
    position: absolute;
    width: 1px;
    height: 200%;
    background: linear-gradient(
        to bottom,
        transparent 0%,
        rgba(163, 230, 53, 0.06) 40%,
        rgba(163, 230, 53, 0.1) 60%,
        transparent 100%
    );
    transform: rotate(-35deg);
    transform-origin: top center;
    right: 15%;
    top: -30%;
}

/* ============================================
   HEADER / NAVIGATION
   ============================================ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-md) 0;
}

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

.site-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    letter-spacing: -0.02em;
}

.site-logo span {
    color: var(--color-accent);
}

.main-nav ul {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.main-nav a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
    position: relative;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--color-text-primary);
}

.main-nav a.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--color-accent);
    border-radius: var(--radius-full);
}

.header-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 10px 20px;
    background: var(--color-accent);
    color: #000;
    font-weight: 600;
    font-size: 0.875rem;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.header-cta:hover {
    background: var(--color-accent-dark);
    color: #000;
    transform: translateY(-1px);
    box-shadow: 0 4px 20px var(--color-accent-glow);
}

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

/* ============================================
   HERO SECTION
   ============================================ */
.blog-hero {
    text-align: center;
    padding: var(--spacing-4xl) 0 var(--spacing-3xl);
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(163, 230, 53, 0.12);
    border: 1px solid rgba(163, 230, 53, 0.25);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    margin-bottom: var(--spacing-lg);
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

.hero-title .script-text {
    font-family: var(--font-script);
    font-style: italic;
    font-weight: 400;
    color: var(--color-accent);
    display: block;
    font-size: 3.2rem;
}

.hero-subtitle {
    font-size: 1rem;
    color: var(--color-text-secondary);
    max-width: 500px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ============================================
   FEATURED POST
   ============================================ */
.featured-post {
    position: relative;
    z-index: 1;
    margin-bottom: var(--spacing-4xl);
}

.featured-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    display: flex;
    align-items: stretch;
    transition: all var(--transition-slow);
    max-width: 900px;
    margin: 0 auto;
}

.featured-card:hover {
    border-color: var(--color-border-light);
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.4);
    transform: translateY(-2px);
}

.featured-image {
    flex: 0 0 45%;
    position: relative;
    overflow: hidden;
}

.featured-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.featured-card:hover .featured-image img {
    transform: scale(1.05);
}

.featured-content {
    flex: 1;
    padding: var(--spacing-xl) var(--spacing-xl);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.featured-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.post-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 12px;
    background: var(--color-tag-bg);
    border: 1px solid rgba(163, 230, 53, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-tag-text);
}

.post-tag svg {
    width: 10px;
    height: 10px;
}

.post-date {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.post-date svg {
    width: 12px;
    height: 12px;
}

.featured-title {
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

.featured-title a:hover {
    color: var(--color-accent);
}

.featured-excerpt {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.featured-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.author-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.8rem;
    color: #000;
}

.author-info .author-name {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.author-info .author-role {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* ============================================
   LATEST ARTICLES SECTION
   ============================================ */
.latest-articles {
    position: relative;
    z-index: 1;
    padding-bottom: var(--spacing-4xl);
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.section-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

/* Category Filter Tabs */
.category-filters {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 18px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    background: transparent;
    color: var(--color-text-secondary);
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-primary);
}

.filter-btn:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.filter-btn.active {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: #000;
    font-weight: 600;
}

/* ============================================
   POST GRID
   ============================================ */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.post-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.post-card:hover {
    border-color: var(--color-border-light);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.post-card-image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16 / 10;
}

.post-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.post-card:hover .post-card-image img {
    transform: scale(1.08);
}

.post-card-body {
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-lg);
    display: flex;
    flex-direction: column;
    flex: 1;
}

.post-card-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.post-card-title {
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.4;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

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

.post-card-excerpt {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ============================================
   PAGINATION
   ============================================ */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    background: transparent;
}

.pagination a:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.pagination .current {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: #000;
    font-weight: 600;
}

.pagination .prev,
.pagination .next {
    font-weight: 600;
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
    position: relative;
    z-index: 1;
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
    background: var(--color-bg-secondary);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-brand .site-logo {
    margin-bottom: var(--spacing-md);
    display: inline-block;
}

.footer-brand p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    max-width: 300px;
}

.footer-column h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-column a {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.footer-column a:hover {
    color: var(--color-accent);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-bottom p {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

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

.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: 1px solid var(--color-border);
    border-radius: 50%;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

/* ============================================
   SINGLE POST PAGE
   ============================================ */
.single-post-hero {
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
    text-align: center;
}

.single-post-hero .post-tag {
    margin-bottom: var(--spacing-md);
}

.single-post-title {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.single-post-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.single-featured-image {
    margin-bottom: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    overflow: hidden;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.single-featured-image img {
    width: 100%;
    height: auto;
}

.post-content {
    max-width: 720px;
    margin: 0 auto var(--spacing-4xl);
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
}

.post-content h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin: var(--spacing-2xl) 0 var(--spacing-md);
}

.post-content h3 {
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin: var(--spacing-xl) 0 var(--spacing-md);
}

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

.post-content blockquote {
    border-left: 3px solid var(--color-accent);
    padding: var(--spacing-md) var(--spacing-lg);
    margin: var(--spacing-xl) 0;
    background: var(--color-bg-card);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    font-style: italic;
    color: var(--color-text-primary);
}

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

.post-content li {
    margin-bottom: var(--spacing-sm);
    list-style: disc;
}

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

.post-content img {
    border-radius: var(--radius-md);
    margin: var(--spacing-xl) 0;
}

/* ============================================
   404 PAGE
   ============================================ */
.error-404 {
    text-align: center;
    padding: var(--spacing-4xl) 0;
}

.error-404 h1 {
    font-size: 6rem;
    font-weight: 800;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: var(--spacing-md);
}

.error-404 p {
    font-size: 1.2rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 12px 28px;
    background: var(--color-accent);
    color: #000;
    font-weight: 600;
    font-size: 0.9rem;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background: var(--color-accent-dark);
    color: #000;
    transform: translateY(-2px);
    box-shadow: 0 4px 20px var(--color-accent-glow);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
    .posts-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-title .script-text {
        font-size: 2.7rem;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(10, 10, 10, 0.98);
        border-bottom: 1px solid var(--color-border);
        padding: var(--spacing-lg);
    }

    .main-nav.active {
        display: block;
    }

    .main-nav ul {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .header-cta {
        display: none;
    }

    .featured-card {
        flex-direction: column;
    }

    .featured-image {
        aspect-ratio: 16 / 9;
    }

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

    .hero-title .script-text {
        font-size: 2.2rem;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }

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

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .single-post-title {
        font-size: 1.75rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
    opacity: 0;
}

.animate-fade-in-up:nth-child(1) { animation-delay: 0.1s; }
.animate-fade-in-up:nth-child(2) { animation-delay: 0.2s; }
.animate-fade-in-up:nth-child(3) { animation-delay: 0.3s; }
.animate-fade-in-up:nth-child(4) { animation-delay: 0.4s; }
.animate-fade-in-up:nth-child(5) { animation-delay: 0.5s; }
.animate-fade-in-up:nth-child(6) { animation-delay: 0.6s; }

/* WordPress Core Alignment Classes */
.alignleft {
    float: left;
    margin-right: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.alignright {
    float: right;
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

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

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

.wp-caption-text {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    text-align: center;
    margin-top: var(--spacing-sm);
}

/* Screen Reader Text */
.screen-reader-text {
    clip: rect(1px, 1px, 1px, 1px);
    position: absolute !important;
    height: 1px;
    width: 1px;
    overflow: hidden;
}

.screen-reader-text:focus {
    background-color: var(--color-bg-primary);
    border-radius: var(--radius-sm);
    box-shadow: 0 0 2px 2px rgba(0, 0, 0, 0.6);
    clip: auto !important;
    color: var(--color-text-primary);
    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;
}