/* ========================================
   Flavor Theme - FlatCMS Default Theme
   Modern, Mobile-First, SEO-Optimized
   ======================================== */

/* ===== CSS Custom Properties ===== */
:root {
    /* Primary palette - Modern indigo/violet */
    --color-primary: #6366f1;
    --color-primary-hover: #4f46e5;
    --color-primary-light: #eef2ff;
    --color-primary-dark: #3730a3;

    /* Secondary */
    --color-secondary: #f59e0b;
    --color-secondary-hover: #d97706;

    /* Neutrals */
    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    --color-bg-dark: #0f172a;
    --color-surface: #ffffff;
    --color-border: #e2e8f0;
    --color-text: #1e293b;
    --color-text-light: #64748b;
    --color-text-lighter: #94a3b8;

    /* Semantic */
    --color-success: #10b981;
    --color-error: #ef4444;

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

    /* Sizing */
    --container-max: 1200px;
    --container-narrow: 780px;
    --header-height: 72px;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-xs: 4px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.05);

    /* Transitions */
    --transition: 0.2s ease;
    --transition-slow: 0.35s ease;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

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

ul,
ol {
    list-style: none;
}

/* ===== Accessibility ===== */
.skip-link {
    position: absolute;
    left: -999px;
    top: 8px;
    z-index: 999;
    padding: 8px 16px;
    background: var(--color-primary);
    color: #fff;
    border-radius: var(--radius-xs);
    font-size: 14px;
}

.skip-link:focus {
    left: 8px;
}

/* ===== Layout ===== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 20px;
}

.container-narrow {
    max-width: var(--container-narrow);
}

.section {
    padding: 64px 0;
}

/* ===== HEADER ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    height: var(--header-height);
    transition: box-shadow 0.2s ease;
}

.site-header.scrolled {
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    gap: 24px;
}

.site-branding {
    flex-shrink: 0;
}

.site-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
}

.site-logo:hover {
    color: var(--color-primary);
}

.logo-icon {
    font-size: 24px;
    color: var(--color-primary);
}

.site-description {
    display: none;
}

/* Navigation */
.main-nav {
    display: flex;
    align-items: center;
    gap: 24px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-menu li a {
    display: block;
    padding: 8px 16px;
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}

.nav-menu li a:hover,
.nav-menu li a.active {
    color: var(--color-primary);
    background: var(--color-primary-light);
}

/* Search in header */
.search-form {
    position: relative;
}

.search-form input {
    padding: 8px 16px;
    font-size: 14px;
    border: 1px solid var(--color-border);
    border-radius: 20px;
    background: var(--color-bg-alt);
    width: 180px;
    font-family: var(--font-sans);
    outline: none;
    transition: all var(--transition);
}

.search-form input:focus {
    width: 240px;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* Mobile nav toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 101;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-text);
    border-radius: 1px;
    transition: all 0.3s ease;
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== HERO ===== */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    text-align: center;
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 50%, rgba(255, 255, 255, 0.08) 0%, transparent 50%);
    animation: heroGlow 15s ease-in-out infinite;
}

@keyframes heroGlow {

    0%,
    100% {
        transform: translate(0, 0);
    }

    50% {
        transform: translate(5%, 5%);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto 32px;
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 600;
    font-family: var(--font-sans);
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.btn-primary:hover {
    background: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: #fff;
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
    color: #fff;
}

/* ===== SECTION TITLES ===== */
.section-title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 32px;
    color: var(--color-text);
    letter-spacing: -0.01em;
}

/* ===== POST CARDS ===== */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

.post-card {
    background: var(--color-surface);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: all var(--transition-slow);
}

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

.post-card-image {
    display: block;
    overflow: hidden;
}

.post-card-image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

.post-card-body {
    padding: 20px;
}

.post-card-meta {
    display: flex;
    gap: 6px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}

.category-badge {
    display: inline-block;
    padding: 3px 10px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: 20px;
    transition: all var(--transition);
}

.category-badge:hover {
    background: var(--color-primary);
    color: #fff;
}

.post-card-title {
    font-size: 1.15rem;
    font-weight: 700;
    line-height: 1.35;
    margin-bottom: 8px;
}

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

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

.post-card-excerpt {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.6;
    margin-bottom: 16px;
}

.post-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--color-text-lighter);
}

.read-more {
    font-weight: 600;
    color: var(--color-primary);
    font-size: 0.85rem;
}

.read-more:hover {
    color: var(--color-primary-hover);
}

/* ===== SINGLE POST ===== */
.single-post,
.single-page {
    padding: 32px 0 64px;
}

/* Breadcrumb */
.breadcrumb {
    margin-bottom: 24px;
    font-size: 0.85rem;
}

.breadcrumb ol {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.breadcrumb li:not(:last-child)::after {
    content: '›';
    margin-left: 8px;
    color: var(--color-text-lighter);
}

.breadcrumb li a {
    color: var(--color-text-light);
}

.breadcrumb li a:hover {
    color: var(--color-primary);
}

.breadcrumb li:last-child {
    color: var(--color-text-light);
}

/* Post Header */
.post-header {
    margin-bottom: 32px;
}

.post-categories {
    margin-bottom: 12px;
}

.post-title,
.page-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    line-height: 1.2;
    color: var(--color-text);
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.post-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 0.9rem;
    color: var(--color-text-light);
}

.post-meta .post-author {
    font-weight: 600;
}

/* Featured Image */
.post-featured-image {
    margin-bottom: 32px;
    border-radius: var(--radius);
    overflow: hidden;
}

.post-featured-image img {
    width: 100%;
    height: auto;
    border-radius: var(--radius);
}

/* Post Content Typography - SEO heading structure */
.post-content {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--color-text);
}

.post-content h2 {
    font-size: 1.65rem;
    font-weight: 700;
    margin: 48px 0 16px;
    color: var(--color-text);
    letter-spacing: -0.01em;
    line-height: 1.3;
}

.post-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin: 32px 0 12px;
    color: var(--color-text);
    line-height: 1.4;
}

.post-content h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 24px 0 8px;
}

.post-content p {
    margin-bottom: 20px;
}

.post-content a {
    color: var(--color-primary);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.post-content a:hover {
    text-decoration-thickness: 2px;
}

.post-content img {
    border-radius: var(--radius-sm);
    margin: 24px auto;
}

.post-content blockquote {
    border-left: 4px solid var(--color-primary);
    padding: 16px 24px;
    margin: 24px 0;
    background: var(--color-bg-alt);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-style: italic;
    color: var(--color-text-light);
}

.post-content ul,
.post-content ol {
    margin: 16px 0;
    padding-left: 24px;
}

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

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

.post-content li {
    margin-bottom: 8px;
}

.post-content pre {
    background: var(--color-bg-dark);
    color: #e2e8f0;
    padding: 20px 24px;
    border-radius: var(--radius-sm);
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.6;
    margin: 24px 0;
}

.post-content code {
    font-family: var(--font-mono);
    font-size: 0.85em;
    padding: 2px 6px;
    background: var(--color-bg-alt);
    border-radius: var(--radius-xs);
    color: var(--color-primary-dark);
}

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

.post-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
}

.post-content table th,
.post-content table td {
    padding: 10px 16px;
    border: 1px solid var(--color-border);
    text-align: left;
}

.post-content table th {
    background: var(--color-bg-alt);
    font-weight: 600;
}

/* Tags */
.post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    margin: 32px 0;
    padding: 20px 0;
    border-top: 1px solid var(--color-border);
}

.tags-label {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-text-light);
}

.tag-link {
    padding: 4px 12px;
    font-size: 0.8rem;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    color: var(--color-text-light);
    transition: all var(--transition);
}

.tag-link:hover {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* Post Navigation */
.post-navigation {
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
}

.nav-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.nav-prev,
.nav-next {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}

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

.nav-prev:hover,
.nav-next:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.nav-label {
    font-size: 0.8rem;
    color: var(--color-text-lighter);
    font-weight: 500;
}

.nav-title {
    font-weight: 600;
    color: var(--color-text);
    font-size: 0.95rem;
    line-height: 1.4;
}

/* ===== ARCHIVE ===== */
.archive-section {
    padding: 48px 0 64px;
}

.archive-header {
    margin-bottom: 32px;
}

.archive-title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
}

.archive-description {
    margin-top: 8px;
    color: var(--color-text-light);
}

/* ===== SEARCH ===== */
.search-section {
    padding: 48px 0 64px;
}

.search-form-large {
    display: flex;
    gap: 8px;
    max-width: 500px;
    margin: 0 auto 40px;
}

.search-form-large input {
    flex: 1;
    padding: 14px 20px;
    font-size: 16px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    outline: none;
    transition: border-color var(--transition);
}

.search-form-large input:focus {
    border-color: var(--color-primary);
}

/* Posts list (search results) */
.posts-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.post-list-item {
    padding: 24px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    transition: all var(--transition);
}

.post-list-item:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow);
}

.post-list-item h2 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.post-list-item h2 a {
    color: var(--color-text);
}

.post-list-item h2 a:hover {
    color: var(--color-primary);
}

.post-list-item p {
    color: var(--color-text-light);
    font-size: 0.9rem;
    margin-bottom: 12px;
}

/* ===== 404 ===== */
.error-404 .error-code {
    font-size: clamp(5rem, 15vw, 10rem);
    font-weight: 900;
    color: var(--color-primary);
    opacity: 0.15;
    line-height: 1;
    margin-bottom: -20px;
}

.error-404 h1 {
    font-size: 1.75rem;
    margin-bottom: 12px;
}

.error-404 p {
    color: var(--color-text-light);
    margin-bottom: 0;
}

/* ===== EMPTY MESSAGE ===== */
.empty-message {
    text-align: center;
    padding: 60px 20px;
    color: var(--color-text-light);
}

.empty-message p {
    font-size: 1.05rem;
    margin-bottom: 16px;
}

/* ===== PAGINATION ===== */
.pagination {
    margin-top: 48px;
    display: flex;
    justify-content: center;
}

.pagination ul {
    display: flex;
    gap: 4px;
    align-items: center;
}

.pagination a,
.pagination .current {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text);
    transition: all var(--transition);
}

.pagination a:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: var(--color-primary-light);
}

.pagination .current {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
    font-weight: 700;
}

.pagination .dots {
    color: var(--color-text-lighter);
    padding: 0 4px;
}

/* ===== FOOTER ===== */
.site-footer {
    background: var(--color-bg-dark);
    color: #cbd5e1;
    padding: 64px 0 0;
    margin-top: 64px;
}

.footer-inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
}

.footer-logo:hover {
    color: var(--color-primary);
}

.footer-tagline {
    font-size: 0.9rem;
    color: #94a3b8;
    line-height: 1.6;
}

.footer-links h3 {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #e2e8f0;
    margin-bottom: 16px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-links a {
    color: #94a3b8;
    font-size: 0.9rem;
    transition: color var(--transition);
}

.footer-links a:hover {
    color: #fff;
}

.footer-bottom {
    padding: 20px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    text-align: center;
    font-size: 0.85rem;
    color: #64748b;
}

.footer-bottom a {
    color: #94a3b8;
}

.footer-bottom a:hover {
    color: var(--color-primary);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    :root {
        --header-height: 60px;
    }

    .nav-toggle {
        display: flex;
    }

    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: #fff;
        flex-direction: column;
        align-items: flex-start;
        padding: 80px 24px 24px;
        box-shadow: var(--shadow-xl);
        transition: right var(--transition-slow);
        z-index: 100;
    }

    .main-nav.open {
        right: 0;
    }

    .nav-menu {
        flex-direction: column;
        width: 100%;
        gap: 0;
    }

    .nav-menu li a {
        padding: 12px 0;
        font-size: 16px;
        border-bottom: 1px solid var(--color-border);
        border-radius: 0;
    }

    .search-form {
        width: 100%;
    }

    .search-form input {
        width: 100%;
    }

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

    .hero {
        padding: 48px 0;
    }

    .footer-inner {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .nav-links {
        grid-template-columns: 1fr;
    }

    .section {
        padding: 40px 0;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .posts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ===== PRINT STYLES ===== */
@media print {

    .site-header,
    .site-footer,
    .post-navigation,
    .breadcrumb,
    .search-form,
    .hero {
        display: none;
    }

    body {
        color: #000;
        background: #fff;
        font-size: 12pt;
    }

    .post-content a::after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
        color: #666;
    }
}