/* ============================================
   Modern Minimalistic Recipe Site Styles
   Dark/Light Mode Support
   ============================================ */

/* ============================================
   CSS Custom Properties (Design Tokens)
   ============================================ */

:root {
    /* Light Mode Colors */
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f8f9fa;
    --color-bg-tertiary: #e9ecef;
    --color-text-primary: #1a1a1a;
    --color-text-secondary: #4a5568;
    --color-text-tertiary: #718096;
    --color-accent: #3b82f6;
    --color-accent-hover: #2563eb;
    --color-border: #e2e8f0;
    --color-shadow: rgba(0, 0, 0, 0.1);

    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Layout */
    --container-max: 1200px;
    --container-narrow: 800px;
    --border-radius: 12px;
    --border-radius-sm: 8px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

/* Dark Mode Colors */
.theme-dark {
    --color-bg-primary: #0f172a;
    --color-bg-secondary: #1e293b;
    --color-bg-tertiary: #334155;
    --color-text-primary: #f1f5f9;
    --color-text-secondary: #cbd5e1;
    --color-text-tertiary: #94a3b8;
    --color-accent: #60a5fa;
    --color-accent-hover: #3b82f6;
    --color-border: #334155;
    --color-shadow: rgba(0, 0, 0, 0.3);
}

/* ============================================
   Reset & Base Styles
   ============================================ */

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

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

body {
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    transition: background-color var(--transition-base), color var(--transition-base);
}

/* ============================================
   Typography
   ============================================ */

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

h1 {
    font-size: var(--font-size-4xl);
}

h2 {
    font-size: var(--font-size-3xl);
}

h3 {
    font-size: var(--font-size-2xl);
}

h4 {
    font-size: var(--font-size-xl);
}

p {
    margin-bottom: var(--space-md);
    color: var(--color-text-secondary);
}

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

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

/* ============================================
   Layout
   ============================================ */

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.container-narrow {
    max-width: var(--container-narrow);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.main-content {
    min-height: calc(100vh - 200px);
    padding: var(--space-2xl) 0;
}

/* ============================================
   Header
   ============================================ */

.site-header {
    background-color: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-lg) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    transition: background-color var(--transition-base), border-color var(--transition-base);
}

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

.site-branding .site-title {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text-primary);
    text-decoration: none;
    transition: opacity var(--transition-fast);
}

.site-branding .site-title:hover {
    opacity: 0.8;
}

.site-icon {
    font-size: var(--font-size-2xl);
}

.site-nav {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

/* Language Switcher Dropdown */
.language-switcher-dropdown {
    position: relative;
}

.lang-dropdown-toggle {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-primary);
    background-color: transparent;
    border: 1px solid var(--color-border);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lang-dropdown-toggle:hover {
    background-color: var(--color-bg-tertiary);
}

.current-lang {
    white-space: nowrap;
}

.dropdown-arrow {
    transition: transform var(--transition-fast);
}

.lang-dropdown-toggle[aria-expanded="true"] .dropdown-arrow {
    transform: rotate(180deg);
}

.lang-dropdown-menu {
    position: absolute;
    top: calc(100% + var(--space-xs));
    right: 0;
    min-width: 160px;
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    box-shadow: 0 4px 12px var(--color-shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all var(--transition-fast);
    z-index: 1000;
}

.lang-dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-dropdown-item {
    display: block;
    padding: var(--space-sm) var(--space-md);
    color: var(--color-text-primary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: background-color var(--transition-fast);
    white-space: nowrap;
}

.lang-dropdown-item:hover {
    background-color: var(--color-bg-tertiary);
}

.lang-dropdown-item-active {
    background-color: var(--color-accent);
    color: white;
}

.lang-dropdown-item-active:hover {
    background-color: var(--color-accent-hover);
    color: white;
}

/* Theme Toggle */
.theme-toggle {
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    padding: var(--space-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-primary);
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background-color: var(--color-bg-tertiary);
}

.theme-icon {
    display: none;
}

.theme-light .theme-icon-light {
    display: block;
}

.theme-dark .theme-icon-dark {
    display: block;
}

/* ============================================
   Footer
   ============================================ */

.site-footer {
    background-color: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--space-2xl) 0;
    text-align: center;
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.footer-tagline {
    margin-top: var(--space-sm);
    color: var(--color-text-tertiary);
}

/* ============================================
   Recipe Grid (Homepage)
   ============================================ */

.page-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.page-title {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--space-md);
}

.page-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
}

.recipe-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-xl);
    margin-bottom: var(--space-3xl);
}

.recipe-card {
    background-color: var(--color-bg-secondary);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    border: 1px solid var(--color-border);
}

.recipe-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px var(--color-shadow);
}

.recipe-link {
    display: block;
    color: inherit;
    text-decoration: none;
}

.recipe-thumbnail {
    position: relative;
    width: 100%;
    padding-top: 56.25%;
    /* 16:9 aspect ratio */
    overflow: hidden;
    background-color: var(--color-bg-tertiary);
}

.recipe-thumbnail img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.recipe-card:hover .recipe-thumbnail img {
    transform: scale(1.05);
}

.recipe-duration {
    position: absolute;
    bottom: var(--space-sm);
    right: var(--space-sm);
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.recipe-content {
    padding: var(--space-lg);
}

.recipe-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-sm);
    color: var(--color-text-primary);
}

.recipe-date {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-md);
}

.recipe-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.tag {
    display: inline-block;
    padding: var(--space-xs) var(--space-sm);
    background-color: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 500;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--space-3xl) 0;
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
}

/* ============================================
   Single Recipe Page
   ============================================ */

.recipe-single {
    padding: var(--space-2xl) 0;
}

/* YouTube Embed */
.video-wrapper {
    position: relative;
    width: 100%;
    padding-top: 56.25%;
    /* 16:9 aspect ratio */
    margin-bottom: var(--space-2xl);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 8px 16px var(--color-shadow);
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* Recipe Header */
.recipe-header {
    margin-bottom: var(--space-2xl);
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid var(--color-border);
}

.recipe-title-main {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--space-lg);
}

.recipe-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.meta-item svg {
    color: var(--color-accent);
}

.recipe-tags-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.recipe-translations {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background-color: var(--color-bg-secondary);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
}

.translations-label {
    color: var(--color-text-secondary);
    font-weight: 600;
}

.translation-link {
    padding: var(--space-xs) var(--space-md);
    background-color: var(--color-bg-tertiary);
    border-radius: var(--border-radius-sm);
    color: var(--color-text-primary);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.translation-link:hover {
    background-color: var(--color-accent);
    color: white;
}

/* Recipe Body (Markdown Content) */
.recipe-body {
    font-size: var(--font-size-lg);
    line-height: 1.8;
}

.recipe-body h2 {
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-border);
}

.recipe-body h3 {
    margin-top: var(--space-xl);
    margin-bottom: var(--space-md);
}

.recipe-body ul,
.recipe-body ol {
    margin-bottom: var(--space-lg);
    padding-left: var(--space-xl);
}

.recipe-body li {
    margin-bottom: var(--space-sm);
    color: var(--color-text-secondary);
}

.recipe-body li::marker {
    color: var(--color-accent);
}

/* Recipe Footer */
.recipe-footer {
    margin-top: var(--space-3xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    background-color: var(--color-bg-secondary);
    border-radius: var(--border-radius-sm);
    color: var(--color-text-primary);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.back-link:hover {
    background-color: var(--color-accent);
    color: white;
}

.back-link svg {
    transition: transform var(--transition-fast);
}

.back-link:hover svg {
    transform: translateX(-4px);
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 768px) {
    :root {
        --font-size-4xl: 1.75rem;
        --font-size-3xl: 1.5rem;
    }

    .header-content {
        flex-direction: column;
        gap: var(--space-md);
    }

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

    .recipe-meta {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .recipe-translations {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {

    .container,
    .container-narrow {
        padding: 0 var(--space-md);
    }

    .language-switcher {
        flex-wrap: wrap;
    }
}