/*
 * Personal Best Pace Theme Styles
 * A minimalist, light theme
 */

/* ========================================
   CSS Variables
   ======================================== */
:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-text: #1f2937;
    --color-text-light: #6b7280;
    --color-background: #ffffff;
    --color-surface: #f9fafb;
    --color-border: #e5e7eb;
    --color-accent: #10b981;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;

    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;

    --max-width: 1200px;
    --max-width-narrow: 800px;

    --border-radius: 8px;
    --transition: 0.2s ease;
}

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

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font-family);
    font-size: 1rem;
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-background);
}

h1, h2, h3, h4, h5, h6 {
    margin-top: 0;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    line-height: 1.3;
}

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

p {
    margin-top: 0;
    margin-bottom: var(--spacing-sm);
}

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

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

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

ul, ol {
    margin-top: 0;
    padding-left: var(--spacing-md);
}

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

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

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

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: white;
    padding: 8px;
    z-index: 100000;
}

.skip-link:focus {
    top: 0;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    line-height: 1;
    border-radius: var(--border-radius);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: white;
}

.btn-secondary {
    background-color: var(--color-surface);
    color: var(--color-text);
    border-color: var(--color-border);
}

.btn-secondary:hover {
    background-color: var(--color-border);
    color: var(--color-text);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-outline:hover {
    background-color: var(--color-primary);
    color: white;
}

/* ========================================
   Header
   ======================================== */
.site-header {
    background: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.site-branding .site-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
}

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

.main-navigation {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

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

.main-navigation a {
    color: var(--color-text);
    font-weight: 500;
    padding: var(--spacing-xs) 0;
}

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

.header-cta {
    background-color: var(--color-primary);
    color: white !important;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    font-size: 0.875rem;
}

.header-cta:hover {
    background-color: var(--color-primary-dark);
}

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

.menu-toggle-icon {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    position: relative;
}

.menu-toggle-icon::before,
.menu-toggle-icon::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    left: 0;
}

.menu-toggle-icon::before { top: -7px; }
.menu-toggle-icon::after { bottom: -7px; }

/* ========================================
   Hero Section
   ======================================== */
.hero {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-background) 100%);
}

.hero-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* ========================================
   Features Section
   ======================================== */
.features {
    padding: var(--spacing-2xl) 0;
}

.features h2 {
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.features-intro {
    text-align: center;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
}

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

.feature-card {
    background: var(--color-surface);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    transition: transform var(--transition), box-shadow var(--transition);
}

.feature-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: var(--color-primary);
    color: white;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
}

.feature-card h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
}

.feature-card p {
    color: var(--color-text-light);
    margin-bottom: 0;
    font-size: 0.9375rem;
}

/* ========================================
   Recent Posts Section
   ======================================== */
.recent-posts-section {
    padding: var(--spacing-2xl) 0;
    background: var(--color-surface);
}

.recent-posts-section h2 {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.posts-cta {
    text-align: center;
    margin-top: var(--spacing-xl);
}

.no-posts {
    text-align: center;
    color: var(--color-text-light);
    padding: var(--spacing-xl) 0;
}

/* ========================================
   Post Card
   ======================================== */
.post-card {
    background: var(--color-background);
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: transform var(--transition), box-shadow var(--transition);
}

.post-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.post-card-thumbnail img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.post-card-content {
    padding: var(--spacing-md);
}

.post-card-date {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

.post-card-title {
    font-size: 1.125rem;
    margin: var(--spacing-xs) 0;
}

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

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

.post-card-excerpt {
    color: var(--color-text-light);
    font-size: 0.9375rem;
}

.post-card-excerpt p {
    margin-bottom: 0;
}

.post-card-footer {
    margin-top: var(--spacing-sm);
}

.read-more {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 500;
    font-size: 0.875rem;
}

.read-more svg {
    transition: transform var(--transition);
}

.read-more:hover svg {
    transform: translateX(4px);
}

/* ========================================
   Content Area
   ======================================== */
.content-area {
    padding: var(--spacing-xl) 0;
}

.page-header {
    margin-bottom: var(--spacing-xl);
}

.page-title {
    margin-bottom: var(--spacing-sm);
}

.archive-description {
    color: var(--color-text-light);
}

/* ========================================
   Single Post
   ======================================== */
.single-post .entry-header {
    margin-bottom: var(--spacing-lg);
}

.single-post .entry-meta {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-light);
    font-size: 0.875rem;
}

.single-post .entry-meta a {
    color: var(--color-primary);
}

.single-post .entry-title {
    font-size: 2.5rem;
}

.single-post .entry-thumbnail {
    margin-bottom: var(--spacing-lg);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.single-post .entry-content {
    font-size: 1.0625rem;
}

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

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

.single-post .entry-footer {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.tags-links {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
    color: var(--color-text-light);
}

.tags-links a {
    background: var(--color-surface);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
}

.post-navigation {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.post-navigation .nav-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.post-navigation .nav-subtitle {
    display: block;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xs);
}

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

/* ========================================
   Page Content
   ======================================== */
.page-content .entry-title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.page-content .entry-content {
    font-size: 1.0625rem;
}

.page-content .entry-content h2 {
    margin-top: var(--spacing-xl);
}

.page-content .entry-content h3 {
    margin-top: var(--spacing-lg);
}

/* ========================================
   Pagination
   ======================================== */
.pagination {
    margin-top: var(--spacing-xl);
    text-align: center;
}

.pagination .nav-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xs);
}

.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--spacing-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    color: var(--color-text);
}

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

.pagination .current {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
    background: var(--color-text);
    color: white;
    padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.footer-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
}

.footer-section h4 {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-sm);
    color: rgba(255, 255, 255, 0.7);
}

.footer-copyright p {
    margin: 0;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
}

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

.footer-posts li {
    margin-bottom: var(--spacing-xs);
}

.footer-posts a {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.9375rem;
}

.footer-posts a:hover {
    color: white;
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    color: white;
    transition: background var(--transition);
}

.social-links a:hover {
    background: var(--color-primary);
}

.footer-bottom {
    max-width: var(--max-width);
    margin: var(--spacing-lg) auto 0;
    padding: var(--spacing-lg) var(--spacing-md) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom ul {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
}

.footer-bottom a:hover {
    color: white;
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }

    .hero h1 {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .hero-cta .btn {
        width: 100%;
        max-width: 300px;
    }

    .menu-toggle {
        display: block;
    }

    .main-navigation ul {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-background);
        flex-direction: column;
        padding: var(--spacing-md);
        border-bottom: 1px solid var(--color-border);
        gap: 0;
    }

    .main-navigation ul.active {
        display: flex;
    }

    .main-navigation li {
        border-bottom: 1px solid var(--color-border);
    }

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

    .main-navigation a {
        display: block;
        padding: var(--spacing-sm) 0;
    }

    .single-post .entry-title {
        font-size: 1.75rem;
    }

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

    .post-navigation .nav-next {
        text-align: left;
    }

    .footer-container {
        text-align: center;
    }

    .social-links {
        justify-content: center;
    }
}