/* ================================
   WEBSITE STYLES
   Landing page for Meal Planner
================================= */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
                 Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
    background: #ffffff;
    color: #1f2937;
    line-height: 1.6;
}

/* ================================
   NAVIGATION
================================= */

.main-nav {
    background: #ffffff;
    border-bottom: 1px solid #e5e7eb;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #2563eb;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: #4b5563;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: #2563eb;
}

.cta-button {
    background: #2563eb;
    color: white !important;
    padding: 0.5rem 1.5rem;
    border-radius: 8px;
    transition: background 0.2s;
}

.cta-button:hover {
    background: #1d4ed8;
}

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

.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 6rem 2rem;
    text-align: center;
}

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

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.primary-button {
    background: white;
    color: #667eea;
    padding: 1rem 2rem;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.2s;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.primary-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.2);
}

.primary-button.large {
    padding: 1.25rem 2.5rem;
    font-size: 1.25rem;
}

.secondary-button {
    background: rgba(255,255,255,0.2);
    color: white;
    padding: 1rem 2rem;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.2s;
    border: 2px solid white;
}

.secondary-button:hover {
    background: rgba(255,255,255,0.3);
}

.hero-note {
    font-size: 0.95rem;
    opacity: 0.9;
}

/* ================================
   FEATURES SECTION
================================= */

.features {
    padding: 5rem 2rem;
    background: #f9fafb;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

.features h2,
.how-it-works h2,
.use-cases h2,
.cta-section h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
    color: #111827;
}

.section-subtitle {
    text-align: center;
    color: #6b7280;
    font-size: 1.1rem;
    margin-bottom: 3rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.4rem;
    margin-bottom: 0.75rem;
    color: #1f2937;
}

.feature-card p {
    color: #4b5563;
    line-height: 1.7;
}

/* ================================
   HOW IT WORKS SECTION
================================= */

.how-it-works {
    padding: 5rem 2rem;
    background: white;
}

.steps {
    max-width: 900px;
    margin: 0 auto;
}

.step {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
    align-items: flex-start;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    color: #1f2937;
}

.step-content p {
    color: #4b5563;
    margin-bottom: 1rem;
    line-height: 1.8;
}

.step-content ul {
    list-style: none;
    padding-left: 0;
}

.step-content ul li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: #4b5563;
}

.step-content ul li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #10b981;
    font-weight: bold;
}

/* ================================
   USE CASES SECTION
================================= */

.use-cases {
    padding: 5rem 2rem;
    background: #f9fafb;
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.use-case {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.use-case h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #1f2937;
}

.use-case p {
    color: #4b5563;
    line-height: 1.7;
}

/* ================================
   CTA SECTION
================================= */

.cta-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 5rem 2rem;
    text-align: center;
}

.cta-section h2 {
    color: white;
    margin-bottom: 1rem;
}

.cta-section p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

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

.footer {
    background: #1f2937;
    color: #d1d5db;
    padding: 3rem 2rem 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto 2rem;
}

.footer-section h4 {
    color: white;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #d1d5db;
    text-decoration: none;
    transition: color 0.2s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #374151;
    color: #9ca3af;
    font-size: 0.9rem;
}

.footer-bottom p {
    margin: 0.25rem 0;
}

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

@media (max-width: 768px) {
    .nav-links {
        gap: 1rem;
    }
    
    .nav-links a {
        font-size: 0.9rem;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .features h2,
    .how-it-works h2,
    .use-cases h2,
    .cta-section h2 {
        font-size: 2rem;
    }
    
    .step {
        flex-direction: column;
        gap: 1rem;
    }
    
    .step-number {
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
    }
}

@media (max-width: 480px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .hero {
        padding: 4rem 1.5rem;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .features,
    .how-it-works,
    .use-cases,
    .cta-section {
        padding: 3rem 1.5rem;
    }
}

/* ================================
   ARTICLES PAGE STYLES
================================= */

.articles-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4rem 2rem;
    text-align: center;
}

.articles-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.articles-list {
    padding: 4rem 2rem;
}

.article-card {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    transition: all 0.3s;
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

.article-date {
    color: #6b7280;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.article-card h2 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    color: #1f2937;
}

.article-card h2 a {
    color: #1f2937;
    text-decoration: none;
}

.article-card h2 a:hover {
    color: #2563eb;
}

.article-excerpt {
    color: #4b5563;
    line-height: 1.8;
    margin-bottom: 1rem;
}

.read-more {
    color: #2563eb;
    text-decoration: none;
    font-weight: 600;
}

.read-more:hover {
    text-decoration: underline;
}

/* ================================
   RELEASE NOTES PAGE STYLES
================================= */

.release-notes-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4rem 2rem;
    text-align: center;
}

.release-notes-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.releases {
    padding: 4rem 2rem;
}

.release {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.release-header {
    border-bottom: 2px solid #e5e7eb;
    padding-bottom: 1rem;
    margin-bottom: 1.5rem;
}

.release-version {
    font-size: 1.75rem;
    color: #1f2937;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.release-date {
    color: #6b7280;
    font-size: 0.95rem;
}

.release-category {
    margin-bottom: 1.5rem;
}

.release-category h3 {
    color: #2563eb;
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
}

.release-category ul {
    list-style: none;
    padding-left: 0;
}

.release-category ul li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: #4b5563;
}

.release-category ul li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: #2563eb;
    font-weight: bold;
}

/* ================================
   ARTICLE CONTENT STYLES
================================= */

.article-content {
    padding: 4rem 2rem;
}

.article-content h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #1f2937;
}

.article-meta {
    color: #6b7280;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #e5e7eb;
}

.article-body {
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
    color: #374151;
}

.article-body h2 {
    font-size: 2rem;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    color: #1f2937;
}

.article-body h3 {
    font-size: 1.5rem;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
    color: #1f2937;
}

.article-body p {
    margin-bottom: 1.5rem;
}

.article-body ul, .article-body ol {
    margin-bottom: 1.5rem;
    padding-left: 2rem;
}

.article-body li {
    margin-bottom: 0.5rem;
}

.article-body strong {
    color: #1f2937;
}

.article-body a {
    color: #2563eb;
    text-decoration: none;
}

.article-body a:hover {
    text-decoration: underline;
}

.back-link {
    display: inline-block;
    margin-bottom: 2rem;
    color: #2563eb;
    text-decoration: none;
    font-weight: 600;
}

.back-link:hover {
    text-decoration: underline;
}