/**
 * CLAUDE: Blog-Seite Styles - 2026-01-09
 *
 * Modernisiertes CSS für die Blog-Übersichtsseite (/blog/)
 * - CSS Grid Layout für konsistente Card-Größen
 * - CSS Custom Properties für Theming
 * - Hover-Animationen für Interaktivität
 * - Mobile-First Responsive Design
 * - Accessibility-freundliche Focus-States
 *
 * @package Provimedia
 */

/* ============================================
   1. Blog Hero Section
   ============================================ */

/* CLAUDE: Hero mit Gradient-Hintergrund | Konsistent mit anderen Hub-Seiten */
.pvm-blog-hero {
    background: linear-gradient(135deg, var(--pvm-dark-bg, #0f0f23) 0%, var(--pvm-dark-surface, #1a1a2e) 100%);
    padding: var(--pvm-space-3xl, 96px) 0 var(--pvm-space-2xl, 64px);
    text-align: center;
    position: relative;
    overflow: hidden;
}

/* CLAUDE: Subtiler Gradient-Overlay für Tiefe */
.pvm-blog-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at 50% 0%, rgba(140, 10, 183, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

/* CLAUDE: Hero-Titel mit Gradient-Text | Responsive mit clamp() */
.pvm-blog-hero__title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    margin: 0 0 var(--pvm-space-md, 24px);
    line-height: 1.1;
    background: var(--pvm-gradient, linear-gradient(36deg, #8C0AB7 0%, #4C41E0 100%));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    z-index: 1;
}

/* CLAUDE: Hero-Untertitel | Weiß für bessere Lesbarkeit auf dunklem Hintergrund */
.pvm-blog-hero__subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: rgba(255, 255, 255, 0.9); /* CLAUDE: Weiß mit leichter Transparenz für Softness */
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
    position: relative;
    z-index: 1;
}

/* ============================================
   2. Blog Filters & Search
   ============================================ */

/* CLAUDE: Filter-Container mit Flex-Layout */
.pvm-blog-filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--pvm-space-xs, 8px);
    justify-content: center;
    padding: var(--pvm-space-lg, 32px) 0;
    border-bottom: 1px solid var(--pvm-border, #e9ecef);
    margin-bottom: var(--pvm-space-lg, 32px);
}

/* CLAUDE: Filter-Button Styling | Pill-Design */
.pvm-blog-filter {
    padding: var(--pvm-space-xs, 8px) var(--pvm-space-md, 24px);
    border: 1px solid var(--pvm-border, #e9ecef);
    border-radius: 100px;
    background: var(--pvm-bg-white, #ffffff);
    color: var(--pvm-text-muted, #666666);
    font-size: var(--pvm-font-size-sm, 0.875rem);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

/* CLAUDE: Filter-Button Hover */
.pvm-blog-filter:hover {
    border-color: var(--pvm-primary, #8C0AB7);
    color: var(--pvm-primary, #8C0AB7);
}

/* CLAUDE: Filter-Button Active State */
.pvm-blog-filter.active {
    background: var(--pvm-gradient, linear-gradient(36deg, #8C0AB7 0%, #4C41E0 100%));
    border-color: transparent;
    color: white;
}

/* CLAUDE: Filter-Button Focus für Accessibility */
.pvm-blog-filter:focus-visible {
    outline: 2px solid var(--pvm-primary, #8C0AB7);
    outline-offset: 2px;
}

/* CLAUDE: Such-Container */
.pvm-blog-search {
    max-width: 400px;
    margin: 0 auto var(--pvm-space-lg, 32px);
    position: relative;
}

/* CLAUDE: Such-Input Styling */
.pvm-blog-search__input {
    width: 100%;
    padding: var(--pvm-space-sm, 16px) var(--pvm-space-md, 24px);
    padding-left: 48px;
    border: 1px solid var(--pvm-border, #e9ecef);
    border-radius: 100px;
    font-size: var(--pvm-font-size-base, 1rem);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.pvm-blog-search__input:focus {
    outline: none;
    border-color: var(--pvm-primary, #8C0AB7);
    box-shadow: 0 0 0 3px rgba(140, 10, 183, 0.1);
}

/* CLAUDE: Such-Icon */
.pvm-blog-search__icon {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--pvm-text-light, #999999);
    pointer-events: none;
}

/* ============================================
   3. Blog Grid Layout
   ============================================ */

/* CLAUDE: Blog-Grid Container - 2026-01-09 mit leicht grauem Hintergrund für Card-Kontrast */
.pvm-blog-container {
    padding: var(--pvm-space-lg, 32px) 0 var(--pvm-space-3xl, 96px);
    background: var(--pvm-bg-light, #f8f9fa); /* CLAUDE: Leicht grauer Hintergrund hebt weiße Cards ab */
}

/* CLAUDE: CSS Grid mit auto-fill | Responsive ohne Media Queries */
/* CLAUDE: minmax(320px, 1fr) für optimale Card-Breite */
.pvm-blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--pvm-space-lg, 32px);
}

/* CLAUDE: Featured Post (erster Post) über 2 Spalten */
.pvm-blog-grid .pvm-blog-card:first-child {
    grid-column: span 2;
}

/* CLAUDE: Featured Post auf Mobile nur 1 Spalte */
@media (max-width: 768px) {
    .pvm-blog-grid .pvm-blog-card:first-child {
        grid-column: span 1;
    }
}

/* CLAUDE: Kleinere Cards auf sehr kleinen Screens */
@media (max-width: 400px) {
    .pvm-blog-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   4. Blog Card Design
   ============================================ */

/* CLAUDE: Blog-Card als Container */
.pvm-blog-card {
    background: var(--pvm-bg-white, #ffffff);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--pvm-shadow-sm, 0 2px 8px rgba(0, 0, 0, 0.06));
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

/* CLAUDE: Card Hover-Effekt */
.pvm-blog-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--pvm-shadow-lg, 0 8px 32px rgba(0, 0, 0, 0.12));
}

/* CLAUDE: Card Link als Block für gesamte Card klickbar */
.pvm-blog-card__link {
    display: block;
    text-decoration: none;
    color: inherit;
    height: 100%;
}

/* CLAUDE: Focus-State für Accessibility */
.pvm-blog-card__link:focus-visible {
    outline: 2px solid var(--pvm-primary, #8C0AB7);
    outline-offset: -2px;
    border-radius: 16px;
}

/* CLAUDE: Card Image Container - 2026-01-09 16:9 für Screenshots/Vorschauen */
.pvm-blog-card__image {
    position: relative;
    aspect-ratio: 16 / 9; /* CLAUDE: 16:9 passt besser zu Screenshots als 4:3 */
    overflow: hidden;
    background: var(--pvm-bg-light, #f8f9fa);
}

/* CLAUDE: Card Image Styling - 2026-01-09 */
.pvm-blog-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center; /* CLAUDE: Oberen Teil des Bildes zeigen (wichtig für Screenshots) */
    display: block;
    transition: transform 0.3s ease;
}

/* CLAUDE: Image Zoom bei Hover */
.pvm-blog-card:hover .pvm-blog-card__image img {
    transform: scale(1.05);
}

/* CLAUDE: Kategorie-Badge auf Bild */
.pvm-blog-card__category {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--pvm-gradient, linear-gradient(36deg, #8C0AB7 0%, #4C41E0 100%));
    color: white;
    padding: 4px 14px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

/* CLAUDE: Card Content Container */
.pvm-blog-card__content {
    padding: var(--pvm-space-md, 24px);
}

/* CLAUDE: Card Titel - 2026-01-09 ohne Begrenzung */
.pvm-blog-card__title {
    font-size: var(--pvm-font-size-lg, 1.25rem);
    font-weight: 700;
    margin: 0 0 var(--pvm-space-xs, 8px);
    color: var(--pvm-text, #333333);
    line-height: 1.3;
    /* CLAUDE: Keine Line-Clamp - Titel vollständig anzeigen */
}

/* CLAUDE: Card Excerpt - 2026-01-09 ohne Beschränkung */
.pvm-blog-card__excerpt {
    color: var(--pvm-text-muted, #666666);
    font-size: var(--pvm-font-size-sm, 0.875rem);
    line-height: 1.6;
    margin: 0 0 var(--pvm-space-sm, 16px);
    /* CLAUDE: Keine Line-Clamp Begrenzung - vollständiger Excerpt */
}

/* CLAUDE: Card Meta (Datum, Lesezeit) */
.pvm-blog-card__meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--pvm-font-size-xs, 0.75rem);
    color: var(--pvm-text-light, #999999);
    padding-top: var(--pvm-space-sm, 16px);
    border-top: 1px solid var(--pvm-border, #e9ecef);
}

/* CLAUDE: Meta-Datum */
.pvm-blog-card__date {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* CLAUDE: Meta-Icon */
.pvm-blog-card__meta svg {
    width: 14px;
    height: 14px;
    stroke: currentColor;
}

/* CLAUDE: Lesezeit */
.pvm-blog-card__read-time {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* ============================================
   5. Featured Post (Erster Post)
   ============================================ */

/* CLAUDE: Featured Post größere Typografie */
.pvm-blog-grid .pvm-blog-card:first-child .pvm-blog-card__title {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
}

/* CLAUDE: Featured Post Excerpt - ebenfalls keine Begrenzung */

/* CLAUDE: Featured Post horizontales Layout auf Desktop - 2026-01-09 Bild vollständig */
@media (min-width: 769px) {
    .pvm-blog-grid .pvm-blog-card:first-child .pvm-blog-card__link {
        display: grid;
        grid-template-columns: 1fr 1fr;
        align-items: start; /* CLAUDE: Bild und Content oben ausrichten */
    }

    /* CLAUDE: 2026-01-09 Featured Post Bild - natürliche Proportionen ohne Abschneiden */
    .pvm-blog-grid .pvm-blog-card:first-child .pvm-blog-card__image {
        aspect-ratio: auto; /* CLAUDE: Kein festes Verhältnis */
    }

    .pvm-blog-grid .pvm-blog-card:first-child .pvm-blog-card__image img {
        height: auto; /* CLAUDE: Natürliche Höhe */
        object-fit: contain; /* CLAUDE: Vollständig anzeigen */
    }

    .pvm-blog-grid .pvm-blog-card:first-child .pvm-blog-card__content {
        display: flex;
        flex-direction: column;
        justify-content: center;
        padding: var(--pvm-space-xl, 48px);
    }
}

/* ============================================
   6. Pagination
   ============================================ */

/* CLAUDE: Pagination Container */
.pvm-blog-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--pvm-space-xs, 8px);
    margin-top: var(--pvm-space-2xl, 64px);
    padding-top: var(--pvm-space-lg, 32px);
    border-top: 1px solid var(--pvm-border, #e9ecef);
}

/* CLAUDE: Pagination Links */
.pvm-blog-pagination a,
.pvm-blog-pagination span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    height: 44px;
    padding: 0 var(--pvm-space-sm, 16px);
    border-radius: 8px;
    font-size: var(--pvm-font-size-sm, 0.875rem);
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
}

/* CLAUDE: Pagination Link Styling */
.pvm-blog-pagination a {
    color: var(--pvm-text-muted, #666666);
    background: var(--pvm-bg-light, #f8f9fa);
}

.pvm-blog-pagination a:hover {
    background: var(--pvm-primary, #8C0AB7);
    color: white;
}

/* CLAUDE: Aktuelle Seite */
.pvm-blog-pagination .current {
    background: var(--pvm-gradient, linear-gradient(36deg, #8C0AB7 0%, #4C41E0 100%));
    color: white;
}

/* CLAUDE: Pagination Focus für Accessibility */
.pvm-blog-pagination a:focus-visible {
    outline: 2px solid var(--pvm-primary, #8C0AB7);
    outline-offset: 2px;
}

/* CLAUDE: Pagination Dots */
.pvm-blog-pagination .dots {
    color: var(--pvm-text-light, #999999);
    background: transparent;
}

/* CLAUDE: Prev/Next Arrows */
.pvm-blog-pagination .prev,
.pvm-blog-pagination .next {
    font-weight: 600;
}

/* ============================================
   7. No Results State
   ============================================ */

/* CLAUDE: Leerer Zustand wenn keine Posts */
.pvm-blog-empty {
    text-align: center;
    padding: var(--pvm-space-3xl, 96px) var(--pvm-space-lg, 32px);
}

.pvm-blog-empty__icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--pvm-space-md, 24px);
    color: var(--pvm-text-light, #999999);
}

.pvm-blog-empty__title {
    font-size: var(--pvm-font-size-xl, 1.5rem);
    font-weight: 700;
    margin: 0 0 var(--pvm-space-xs, 8px);
    color: var(--pvm-text, #333333);
}

.pvm-blog-empty__text {
    color: var(--pvm-text-muted, #666666);
    margin: 0;
}

/* ============================================
   8. Filter Hidden State
   ============================================ */

/* CLAUDE: Card ausblenden wenn gefiltert */
.pvm-blog-card[data-filtered="true"] {
    display: none;
}

/* ============================================
   9. Post Count Badge
   ============================================ */

/* CLAUDE: Anzahl der gefundenen Posts */
.pvm-blog-count {
    text-align: center;
    font-size: var(--pvm-font-size-sm, 0.875rem);
    color: var(--pvm-text-muted, #666666);
    margin-bottom: var(--pvm-space-lg, 32px);
}

.pvm-blog-count__number {
    font-weight: 700;
    color: var(--pvm-primary, #8C0AB7);
}

/* ============================================
   10. Loading State
   ============================================ */

/* CLAUDE: Loading Skeleton */
.pvm-blog-card--loading {
    animation: pulse 1.5s ease-in-out infinite;
}

.pvm-blog-card--loading .pvm-blog-card__image {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

/* ============================================
   11. Print Styles
   ============================================ */

@media print {
    .pvm-blog-hero {
        background: none;
        padding: 20px 0;
    }

    .pvm-blog-hero__title {
        background: none;
        -webkit-text-fill-color: #333;
        color: #333;
    }

    .pvm-blog-filters,
    .pvm-blog-search,
    .pvm-blog-pagination {
        display: none;
    }

    .pvm-blog-card {
        box-shadow: none;
        border: 1px solid #ccc;
        page-break-inside: avoid;
    }
}

/* ============================================
   12. Dark Mode Support
   CLAUDE: Filters, Cards, Pagination und Empty State
   ============================================ */

/* CLAUDE: Manueller Toggle - Blog Container */
html[data-theme="dark"] .pvm-blog-container {
    background: var(--pvm-dark-bg);
}

/* CLAUDE: Filter Section Dark Mode */
html[data-theme="dark"] .pvm-blog-filters {
    border-bottom-color: var(--pvm-dark-border);
}

html[data-theme="dark"] .pvm-blog-filter {
    background: var(--pvm-dark-surface);
    border-color: var(--pvm-dark-border);
    color: var(--pvm-dark-text-muted);
}

html[data-theme="dark"] .pvm-blog-filter:hover {
    border-color: var(--pvm-primary-dark-mode);
    color: var(--pvm-primary-dark-mode);
}

html[data-theme="dark"] .pvm-blog-filter.active {
    background: var(--pvm-gradient);
    color: white;
}

/* CLAUDE: Search Input Dark Mode */
html[data-theme="dark"] .pvm-blog-search__input {
    background: var(--pvm-dark-surface);
    border-color: var(--pvm-dark-border);
    color: var(--pvm-dark-text);
}

html[data-theme="dark"] .pvm-blog-search__input::placeholder {
    color: var(--pvm-dark-text-muted);
}

html[data-theme="dark"] .pvm-blog-search__input:focus {
    border-color: var(--pvm-primary-dark-mode);
    box-shadow: 0 0 0 3px rgba(192, 132, 252, 0.15);
}

html[data-theme="dark"] .pvm-blog-search__icon {
    color: var(--pvm-dark-text-muted);
}

/* CLAUDE: Blog Cards Dark Mode */
html[data-theme="dark"] .pvm-blog-card {
    background: var(--pvm-dark-surface);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

html[data-theme="dark"] .pvm-blog-card:hover {
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

html[data-theme="dark"] .pvm-blog-card__image {
    background: var(--pvm-dark-bg);
}

html[data-theme="dark"] .pvm-blog-card__title {
    color: var(--pvm-dark-text);
}

html[data-theme="dark"] .pvm-blog-card__excerpt {
    color: var(--pvm-dark-text-muted);
}

html[data-theme="dark"] .pvm-blog-card__meta {
    border-top-color: var(--pvm-dark-border);
    color: var(--pvm-dark-text-muted);
}

/* CLAUDE: Pagination Dark Mode */
html[data-theme="dark"] .pvm-blog-pagination {
    border-top-color: var(--pvm-dark-border);
}

html[data-theme="dark"] .pvm-blog-pagination a {
    background: var(--pvm-dark-surface);
    color: var(--pvm-dark-text-muted);
}

html[data-theme="dark"] .pvm-blog-pagination a:hover {
    background: var(--pvm-primary-dark-mode);
    color: var(--pvm-dark-bg);
}

html[data-theme="dark"] .pvm-blog-pagination .dots {
    color: var(--pvm-dark-text-muted);
}

/* CLAUDE: Empty State Dark Mode */
html[data-theme="dark"] .pvm-blog-empty__icon {
    color: var(--pvm-dark-text-muted);
}

html[data-theme="dark"] .pvm-blog-empty__title {
    color: var(--pvm-dark-text);
}

html[data-theme="dark"] .pvm-blog-empty__text {
    color: var(--pvm-dark-text-muted);
}

/* CLAUDE: Post Count Dark Mode */
html[data-theme="dark"] .pvm-blog-count {
    color: var(--pvm-dark-text-muted);
}

html[data-theme="dark"] .pvm-blog-count__number {
    color: var(--pvm-primary-dark-mode);
}

/* CLAUDE: System-Präferenz Fallback */
@media (prefers-color-scheme: dark) {
    html:not([data-theme="light"]) .pvm-blog-container {
        background: var(--pvm-dark-bg);
    }

    /* CLAUDE: Filter Section */
    html:not([data-theme="light"]) .pvm-blog-filters {
        border-bottom-color: var(--pvm-dark-border);
    }

    html:not([data-theme="light"]) .pvm-blog-filter {
        background: var(--pvm-dark-surface);
        border-color: var(--pvm-dark-border);
        color: var(--pvm-dark-text-muted);
    }

    html:not([data-theme="light"]) .pvm-blog-filter:hover {
        border-color: var(--pvm-primary-dark-mode);
        color: var(--pvm-primary-dark-mode);
    }

    html:not([data-theme="light"]) .pvm-blog-filter.active {
        background: var(--pvm-gradient);
        color: white;
    }

    /* CLAUDE: Search Input */
    html:not([data-theme="light"]) .pvm-blog-search__input {
        background: var(--pvm-dark-surface);
        border-color: var(--pvm-dark-border);
        color: var(--pvm-dark-text);
    }

    html:not([data-theme="light"]) .pvm-blog-search__input::placeholder {
        color: var(--pvm-dark-text-muted);
    }

    html:not([data-theme="light"]) .pvm-blog-search__input:focus {
        border-color: var(--pvm-primary-dark-mode);
        box-shadow: 0 0 0 3px rgba(192, 132, 252, 0.15);
    }

    html:not([data-theme="light"]) .pvm-blog-search__icon {
        color: var(--pvm-dark-text-muted);
    }

    /* CLAUDE: Blog Cards */
    html:not([data-theme="light"]) .pvm-blog-card {
        background: var(--pvm-dark-surface);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    }

    html:not([data-theme="light"]) .pvm-blog-card:hover {
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    }

    html:not([data-theme="light"]) .pvm-blog-card__image {
        background: var(--pvm-dark-bg);
    }

    html:not([data-theme="light"]) .pvm-blog-card__title {
        color: var(--pvm-dark-text);
    }

    html:not([data-theme="light"]) .pvm-blog-card__excerpt {
        color: var(--pvm-dark-text-muted);
    }

    html:not([data-theme="light"]) .pvm-blog-card__meta {
        border-top-color: var(--pvm-dark-border);
        color: var(--pvm-dark-text-muted);
    }

    /* CLAUDE: Pagination */
    html:not([data-theme="light"]) .pvm-blog-pagination {
        border-top-color: var(--pvm-dark-border);
    }

    html:not([data-theme="light"]) .pvm-blog-pagination a {
        background: var(--pvm-dark-surface);
        color: var(--pvm-dark-text-muted);
    }

    html:not([data-theme="light"]) .pvm-blog-pagination a:hover {
        background: var(--pvm-primary-dark-mode);
        color: var(--pvm-dark-bg);
    }

    html:not([data-theme="light"]) .pvm-blog-pagination .dots {
        color: var(--pvm-dark-text-muted);
    }

    /* CLAUDE: Empty State */
    html:not([data-theme="light"]) .pvm-blog-empty__icon {
        color: var(--pvm-dark-text-muted);
    }

    html:not([data-theme="light"]) .pvm-blog-empty__title {
        color: var(--pvm-dark-text);
    }

    html:not([data-theme="light"]) .pvm-blog-empty__text {
        color: var(--pvm-dark-text-muted);
    }

    /* CLAUDE: Post Count */
    html:not([data-theme="light"]) .pvm-blog-count {
        color: var(--pvm-dark-text-muted);
    }

    html:not([data-theme="light"]) .pvm-blog-count__number {
        color: var(--pvm-primary-dark-mode);
    }
}