/* Sähkölamppu Design System - CSS Variables */
:root {
    --bg-color: #080d16;
    --text-color: #f1f5f9;
    --text-muted: #94a3b8;
    --card-bg: rgba(15, 23, 42, 0.6);
    --card-border: rgba(255, 255, 255, 0.08);
    --header-bg: rgba(8, 13, 22, 0.8);
    --primary-color: #06b6d4;
    --primary-hover: #22d3ee;
    --primary-glow: rgba(6, 182, 212, 0.4);
    --accent-color: #c084fc;
    --accent-glow: rgba(192, 132, 252, 0.25);
    
    --font-heading: 'Outfit', -apple-system, sans-serif;
    --font-sans: 'Plus Jakarta Sans', -apple-system, sans-serif;
    
    --glow-color-1: rgba(6, 182, 212, 0.12);
    --glow-color-2: rgba(168, 85, 247, 0.1);
    
    --tag-bg: rgba(255, 255, 255, 0.06);
    --tag-hover: rgba(6, 182, 212, 0.15);
    --tag-color: #e2e8f0;
}

.light-mode {
    --bg-color: #f8fafc;
    --text-color: #0f172a;
    --text-muted: #64748b;
    --card-bg: rgba(255, 255, 255, 0.85);
    --card-border: rgba(15, 23, 42, 0.08);
    --header-bg: rgba(248, 250, 252, 0.85);
    --primary-color: #0891b2;
    --primary-hover: #0e7490;
    --primary-glow: rgba(8, 145, 178, 0.2);
    --accent-color: #8b5cf6;
    --accent-glow: rgba(139, 92, 246, 0.15);
    
    --glow-color-1: rgba(8, 145, 178, 0.05);
    --glow-color-2: rgba(139, 92, 246, 0.05);
    
    --tag-bg: rgba(15, 23, 42, 0.05);
    --tag-hover: rgba(8, 145, 178, 0.1);
    --tag-color: #334155;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1.5rem;
    width: 100%;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s ease;
}
a:hover {
    color: var(--primary-hover);
}

/* Radial Glow Orbs */
.radial-glow {
    position: fixed;
    border-radius: 50%;
    filter: blur(120px);
    z-index: -1;
    pointer-events: none;
    transition: all 0.5s ease;
}
.glow-1 {
    top: -10%;
    right: -10%;
    width: 50vw;
    height: 50vw;
    background: var(--glow-color-1);
}
.glow-2 {
    bottom: -10%;
    left: -10%;
    width: 45vw;
    height: 45vw;
    background: var(--glow-color-2);
}

/* Sticky Header */
.site-header {
    position: sticky;
    top: 0;
    background-color: var(--header-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--card-border);
    z-index: 100;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}
.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 4.5rem;
}
.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-color);
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.5rem;
    letter-spacing: -0.025em;
}
.bulb-icon {
    width: 2rem;
    height: 2rem;
    color: var(--primary-color);
    filter: drop-shadow(0 0 6px var(--primary-glow));
    transition: transform 0.3s ease, filter 0.3s ease;
}
.logo:hover .bulb-icon {
    transform: rotate(15deg) scale(1.1);
    filter: drop-shadow(0 0 12px var(--primary-color));
}

/* Theme Toggle Button */
.theme-toggle-btn {
    background: none;
    border: 1px solid var(--card-border);
    background-color: var(--card-bg);
    color: var(--text-color);
    padding: 0.5rem;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}
.theme-toggle-btn:hover {
    border-color: var(--primary-color);
    box-shadow: 0 0 8px var(--primary-glow);
}
.theme-toggle-btn svg {
    width: 1.25rem;
    height: 1.25rem;
}

/* Hero Section */
.hero-section {
    padding: 5rem 0 3rem 0;
    text-align: center;
    background: linear-gradient(180deg, rgba(6, 182, 212, 0.03) 0%, transparent 100%);
}
.hero-title {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    background: linear-gradient(135deg, var(--text-color) 40%, var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.75rem;
}
.hero-subtitle {
    color: var(--text-muted);
    font-size: 1.25rem;
    font-weight: 400;
    max-width: 600px;
    margin: 0 auto;
}

/* Main Dashboard Grid */
.blog-dashboard {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 2.5rem;
    padding-bottom: 5rem;
    flex-grow: 1;
}

/* Sidebar Widgets */
.dashboard-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
}
.sidebar-widget {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 1rem;
    padding: 1.5rem;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
}
.sidebar-widget h3 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    border-left: 3.5px solid var(--primary-color);
    padding-left: 0.75rem;
}

/* Search widget */
.search-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}
#search-input {
    width: 100%;
    padding: 0.75rem 2.5rem 0.75rem 1rem;
    background-color: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--card-border);
    border-radius: 0.5rem;
    color: var(--text-color);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    transition: all 0.2s ease;
}
#search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 10px var(--primary-glow);
    background-color: rgba(0, 0, 0, 0.3);
}
#search-clear-btn {
    position: absolute;
    right: 0.75rem;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.25rem;
    cursor: pointer;
}
#search-clear-btn:hover {
    color: var(--text-color);
}

/* Category Filter List */
.categories-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.category-btn {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: none;
    border: none;
    color: var(--text-muted);
    padding: 0.6rem 0.75rem;
    border-radius: 0.5rem;
    cursor: pointer;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    text-align: left;
    transition: all 0.2s ease;
    width: 100%;
}
.category-btn:hover, .category-btn.active {
    background-color: var(--tag-hover);
    color: var(--primary-color);
}
.category-count {
    background-color: var(--tag-bg);
    color: var(--text-muted);
    font-size: 0.75rem;
    padding: 0.15rem 0.5rem;
    border-radius: 99px;
    transition: all 0.2s ease;
}
.category-btn.active .category-count, .category-btn:hover .category-count {
    background-color: var(--primary-color);
    color: #fff;
}

/* Tag Cloud Widget */
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}
.tag-btn {
    background-color: var(--tag-bg);
    color: var(--tag-color);
    border: 1px solid var(--card-border);
    padding: 0.35rem 0.65rem;
    border-radius: 0.5rem;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s ease;
}
.tag-btn:hover, .tag-btn.active {
    background-color: var(--tag-hover);
    border-color: var(--primary-color);
    color: var(--primary-color);
    box-shadow: 0 0 6px var(--primary-glow);
}

/* Active filters banner */
.active-filters-banner {
    background-color: var(--tag-hover);
    border: 1px solid var(--primary-color);
    border-radius: 0.75rem;
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.active-filters-text {
    font-weight: 500;
}
.reset-btn {
    background-color: var(--primary-color);
    color: #fff;
    border: none;
    padding: 0.4rem 0.8rem;
    border-radius: 0.4rem;
    font-size: 0.85rem;
    cursor: pointer;
    font-weight: 600;
    transition: background 0.2s ease;
}
.reset-btn:hover {
    background-color: var(--primary-hover);
}

/* Posts Grid */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

/* Post Cards */
.post-card {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 1rem;
    padding: 1.75rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    transition: var(--transition-smooth);
    animation: fadeIn 0.4s ease forwards;
}
.post-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1), 0 0 15px var(--primary-glow);
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.post-card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}
.card-date-badge {
    font-weight: 500;
}
.card-category-badge {
    color: var(--primary-color);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

.post-card-title {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 0.85rem;
}
.post-card-title a {
    color: var(--text-color);
}
.post-card-title a:hover {
    color: var(--primary-color);
}

.post-card-excerpt {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}
.post-card-excerpt p {
    margin-bottom: 0;
}

.post-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    margin-bottom: 1.25rem;
}
.card-tag {
    background-color: var(--tag-bg);
    color: var(--text-muted);
    font-size: 0.75rem;
    padding: 0.15rem 0.45rem;
    border-radius: 0.25rem;
    border: 1px solid var(--card-border);
}

.post-card-hero {
    margin: -1.75rem -1.75rem 1.25rem -1.75rem;
    height: 180px;
    overflow: hidden;
    border-radius: 0.85rem 0.85rem 0 0;
    border-bottom: 1px solid var(--card-border);
}
.post-card-hero img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-smooth);
}
.post-card:hover .post-card-hero img {
    transform: scale(1.05);
}

.post-card-footer {
    border-top: 1px solid var(--card-border);
    padding-top: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.read-more-link {
    font-size: 0.9rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}
.read-more-link svg {
    width: 1rem;
    height: 1rem;
    transition: transform 0.2s ease;
}
.read-more-link:hover svg {
    transform: translateX(3px);
}

.card-status-badge {
    font-size: 0.7rem;
    padding: 0.1rem 0.4rem;
    border-radius: 99px;
    font-weight: 600;
    text-transform: uppercase;
}
.card-status-badge.status-archive {
    background-color: rgba(244, 63, 94, 0.1);
    color: #f43f5e;
    border: 1px solid rgba(244, 63, 94, 0.2);
}
.card-status-badge.status-publish {
    background-color: rgba(16, 185, 129, 0.1);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

/* Pagination navigation styles */
.pagination-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 3rem;
}
.page-nav-btn {
    border: 1px solid var(--card-border);
    background-color: var(--card-bg);
    color: var(--text-color);
    padding: 0.5rem 0.85rem;
    border-radius: 0.5rem;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s ease;
}
.page-nav-btn:hover:not(:disabled) {
    border-color: var(--primary-color);
    color: var(--primary-color);
    box-shadow: 0 0 6px var(--primary-glow);
}
.page-nav-btn.active {
    background-color: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}
.page-nav-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* Post Detail Page Styling */
.post-detail {
    padding: 3rem 0 5rem 0;
    max-width: 800px;
}
.post-back-nav {
    margin-bottom: 2rem;
}
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--text-muted);
}
.back-link:hover {
    color: var(--primary-color);
}
.back-icon {
    width: 1.1rem;
    height: 1.1rem;
}

.post-detail-header {
    margin-bottom: 2.5rem;
    border-bottom: 1px solid var(--card-border);
    padding-bottom: 2rem;
}
.post-detail-hero {
    width: 100%;
    height: 400px;
    border-radius: 1.25rem;
    overflow: hidden;
    margin-bottom: 2.25rem;
    border: 1px solid var(--card-border);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
}
.post-detail-hero img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
@media (max-width: 768px) {
    .post-detail-hero {
        height: 240px;
        border-radius: 0.75rem;
        margin-bottom: 1.5rem;
    }
}

.post-meta-details {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}
.post-date-badge {
    background-color: var(--primary-glow);
    color: var(--primary-color);
    padding: 0.35rem 0.75rem;
    border-radius: 99px;
    font-weight: 600;
    font-size: 0.85rem;
}
.detail-category-badge {
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 0.05em;
    color: var(--accent-color);
}
.post-detail-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.25;
    margin-bottom: 1.25rem;
    letter-spacing: -0.03em;
}
.post-detail-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}
.detail-tag {
    background-color: var(--tag-bg);
    color: var(--tag-color);
    border: 1px solid var(--card-border);
    font-size: 0.8rem;
    padding: 0.25rem 0.6rem;
    border-radius: 0.35rem;
}

/* Post Detail Content (Markdown rendered HTML styling) */
.post-detail-content {
    font-size: 1.1rem;
    line-height: 1.75;
    color: var(--text-color);
}
.post-detail-content p {
    margin-bottom: 1.5rem;
}
.post-detail-content h1, .post-detail-content h2, .post-detail-content h3 {
    font-family: var(--font-heading);
    font-weight: 700;
    margin: 2.5rem 0 1rem 0;
    line-height: 1.3;
}
.post-detail-content h1 { font-size: 2rem; }
.post-detail-content h2 { font-size: 1.6rem; border-bottom: 1px solid var(--card-border); padding-bottom: 0.5rem; }
.post-detail-content h3 { font-size: 1.3rem; }

.post-detail-content blockquote {
    border-left: 4px solid var(--primary-color);
    background-color: var(--tag-bg);
    padding: 1rem 1.5rem;
    margin: 1.5rem 0;
    font-style: italic;
    border-radius: 0 0.5rem 0.5rem 0;
}
.post-detail-content blockquote p {
    margin-bottom: 0;
}

.post-detail-content img {
    max-width: 100%;
    height: auto;
    border-radius: 0.75rem;
    margin: 1.5rem 0;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    display: block;
}
.post-detail-content a {
    color: var(--primary-color);
    text-decoration: underline;
}
.post-detail-content a:hover {
    color: var(--primary-hover);
}

.post-detail-content ul, .post-detail-content ol {
    margin: 0 0 1.5rem 1.5rem;
}
.post-detail-content li {
    margin-bottom: 0.5rem;
}

/* Post detail navigation */
.post-navigation {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    border-top: 1px solid var(--card-border);
    padding-top: 2rem;
    margin-top: 3.5rem;
}
.nav-card {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 1.25rem;
    border-radius: 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    transition: var(--transition-smooth);
}
.nav-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05), 0 0 10px var(--primary-glow);
}
.nav-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--text-muted);
}
.nav-title {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-color);
    line-height: 1.4;
}
.nav-card:hover .nav-title {
    color: var(--primary-color);
}
.nav-next {
    text-align: right;
}

/* Scroll to Top button */
.scroll-to-top-btn {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background-color: var(--card-bg);
    color: var(--text-color);
    border: 1px solid var(--card-border);
    padding: 0.75rem;
    border-radius: 99px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
    z-index: 99;
}
.scroll-to-top-btn.visible {
    opacity: 1;
    visibility: visible;
}
.scroll-to-top-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    box-shadow: 0 0 12px var(--primary-color);
    transform: translateY(-3px);
}
.scroll-to-top-btn svg {
    width: 1.25rem;
    height: 1.25rem;
}

/* Footer */
.site-footer {
    border-top: 1px solid var(--card-border);
    background-color: var(--header-bg);
    padding: 2.5rem 0;
    margin-top: auto;
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-muted);
}
.footer-container {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.built-by {
    font-size: 0.8rem;
    opacity: 0.8;
}

/* Responsive adjustments */
@media (max-width: 900px) {
    .blog-dashboard {
        grid-template-columns: 1fr;
    }
    .hero-title {
        font-size: 2.75rem;
    }
}
@media (max-width: 600px) {
    .hero-title {
        font-size: 2.25rem;
    }
    .post-detail-title {
        font-size: 1.85rem;
    }
    .post-navigation {
        grid-template-columns: 1fr;
    }
    .site-header {
        height: 4rem;
    }
    .logo-text {
        font-size: 1.3rem;
    }
}