/*
 * Theme Name: AI Nexus v3.0
 * Theme URI: https://example.com/ai-nexus
 * Author: Your Name
 * Description: Modern WordPress theme with podcast support
 * Version: 3.0.1
 * License: GPL 2.0 or later
 * License URI: https://www.gnu.org/licenses/gpl-2.0.html
 * Text Domain: ai-nexus-v3
 */

:root {
    --color-primary-from: #0A0E27;
    --color-primary-to: #0F172A;
    --color-accent-from: #60A5FA;
    --color-accent-to: #3B82F6;
    --color-highlight-from: #FB923C;
    --color-highlight-to: #F97316;
    --color-text: #E5E7EB;
    --color-text-light: #9CA3AF;
    --color-border: rgba(96, 165, 250, 0.2);
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.4);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background: linear-gradient(135deg, var(--color-primary-from), var(--color-primary-to));
    color: var(--color-text);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-weight: 400;
    line-height: 1.6;
    min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

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

a {
    color: var(--color-accent-from);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--color-highlight-from);
}

/* ===== HEADER & NAVIGATION ===== */

.site-header {
    background: linear-gradient(135deg, var(--color-primary-from), var(--color-primary-to));
    border-bottom: 2px solid var(--color-accent-from);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.site-branding {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex: 1;
}

.site-branding img {
    height: 50px;
    width: auto;
}

.site-title {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

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

.site-title a:hover {
    color: var(--color-highlight-from);
}

.site-description {
    margin: 0;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
}

/* Navigation Menu */

.primary-navigation {
    flex: 1;
    margin-left: auto;
}

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

.nav-menu .menu-item {
    position: relative;
}

.nav-menu .menu-link {
    display: block;
    padding: 8px 16px;
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border-radius: var(--radius-sm);
}

.nav-menu .menu-link:hover,
.nav-menu .menu-item.active > .menu-link,
.nav-menu .current-menu-item > .menu-link {
    color: var(--color-accent-from);
    background: rgba(96, 165, 250, 0.1);
    border-bottom: 2px solid var(--color-accent-from);
}

/* Submenu Styling */

.nav-menu .submenu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: linear-gradient(135deg, var(--color-primary-from), var(--color-primary-to));
    list-style: none;
    padding: var(--spacing-sm) 0;
    margin: 0;
    min-width: 200px;
    border-radius: var(--radius-md);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--color-accent-from);
}

.nav-menu .menu-item.has-submenu:hover > .submenu {
    display: block;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.nav-menu .submenu .menu-link {
    display: block;
    padding: 10px 20px;
    color: rgba(255, 255, 255, 0.9);
}

.nav-menu .submenu .menu-link:hover {
    background: rgba(96, 165, 250, 0.2);
}

/* Mobile Menu Toggle */

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 10px;
    margin-left: auto;
}

.hamburger-icon {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.hamburger-icon span {
    width: 25px;
    height: 3px;
    background: var(--color-accent-from);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.mobile-menu-toggle.active .hamburger-icon span:nth-child(1) {
    transform: rotate(45deg) translate(10px, 10px);
}

.mobile-menu-toggle.active .hamburger-icon span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active .hamburger-icon span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ===== HERO SECTION ===== */

.hero-section {
    background: linear-gradient(135deg, var(--color-primary-from), var(--color-primary-to));
    padding: 80px var(--spacing-lg);
    text-align: center;
    border-bottom: 2px solid var(--color-accent-from);
}

.hero-container {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3rem;
    font-weight: 900;
    margin: 0 0 var(--spacing-md) 0;
    background: linear-gradient(135deg, var(--color-accent-from), var(--color-highlight-from));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.85);
    margin: 0;
}

/* ===== MAIN CONTENT ===== */

.main-content {
    max-width: 1200px;
    margin: var(--spacing-2xl) auto;
    padding: 0 var(--spacing-lg);
}

.content-area {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--spacing-lg);
}

/* Posts */

.post-item,
.page-content,
.podcast-item {
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.post-title {
    font-size: 1.75rem;
    color: var(--color-accent-from);
    margin-bottom: var(--spacing-md);
}

.post-meta {
    display: flex;
    gap: var(--spacing-lg);
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.post-meta a {
    color: var(--color-accent-from);
}

/* ===== SIDEBAR ===== */

.primary-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.widget {
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.widget-title {
    font-size: 1.1rem;
    color: var(--color-accent-from);
    margin-bottom: var(--spacing-md);
}

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

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

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

/* ===== BUTTONS ===== */

button,
.button,
input[type="button"],
input[type="submit"] {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-accent-from), var(--color-accent-to));
    color: white;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

button:hover,
.button:hover {
    background: linear-gradient(135deg, var(--color-highlight-from), var(--color-highlight-to));
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ===== FOOTER ===== */

.site-footer {
    background: linear-gradient(135deg, var(--color-primary-from), var(--color-primary-to));
    border-top: 2px solid var(--color-accent-from);
    margin-top: var(--spacing-2xl);
    padding: var(--spacing-2xl) var(--spacing-lg);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.footer-widget {
    color: rgba(255, 255, 255, 0.8);
}

.footer-widget h3 {
    color: var(--color-accent-from);
}

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

.footer-widget li {
    padding: var(--spacing-sm) 0;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    color: var(--color-text-light);
}

/* ===== PODCAST STYLES ===== */

.podcast-item {
    margin-bottom: var(--spacing-lg);
}

.podcast-title {
    color: var(--color-accent-from);
}

.podcast-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.podcast-card {
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.3s ease;
}

.podcast-card:hover {
    border-color: var(--color-accent-from);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.podcast-card-content {
    padding: var(--spacing-lg);
}

.podcast-card-title {
    margin: 0 0 var(--spacing-md) 0;
}

.podcast-card-title a {
    color: var(--color-accent-from);
}

audio[controls] {
    width: 100%;
    margin: var(--spacing-lg) 0;
}

/* ===== 404 & SEARCH ===== */

.page-title,
.archive-title {
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--color-accent-from);
}

.no-results,
.not-found {
    text-align: center;
    padding: var(--spacing-2xl);
}

/* ===== RESPONSIVE ===== */

@media (max-width: 768px) {
    .header-container {
        height: 60px;
        padding: 0 var(--spacing-md);
    }

    .site-title {
        font-size: 1.2rem;
    }

    .site-description {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }

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

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

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

    .post-title {
        font-size: 1.5rem;
    }

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

@media (max-width: 480px) {
    .header-container {
        height: 50px;
    }

    .site-title {
        font-size: 1rem;
    }

    .hero-section {
        padding: 40px var(--spacing-md);
    }

    .hero-title {
        font-size: 1.5rem;
    }
}

/* ===== UTILITIES ===== */

.screen-reader-text {
    position: absolute;
    top: -9999px;
    left: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.pagination {
    margin: var(--spacing-2xl) 0;
    text-align: center;
}

.pagination a,
.pagination span {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    margin: 0 var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-accent-from), var(--color-accent-to));
    color: white;
    border-radius: var(--radius-md);
    text-decoration: none;
}

.pagination .current {
    background: linear-gradient(135deg, var(--color-highlight-from), var(--color-highlight-to));
}