/**
 * Workflow Archive & Taxonomy Stylesheet
 * Standard: Aligned with Homepage Hero & OpenAI-Grade Typography
 * Fonts: Plus Jakarta Sans (Headings 800) + Inter (Body 400/500/600) + JetBrains Mono (Code)
 */

/* ==========================================================================
   Design Tokens & CSS Variables
   ========================================================================== */
:root {
    /* Master Typography */
    --wf-font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --wf-font-heading: 'Plus Jakarta Sans', 'Inter', system-ui, -apple-system, sans-serif;
    --wf-font-mono: 'JetBrains Mono', monospace;

    /* Palette Aligned with Homepage Hero */
    --wf-canvas-bg: #FFFFFF;
    --wf-surface-subtle: #F8FAFC;
    --wf-surface-card: #FFFFFF;
    --wf-border-hairline: rgba(0, 0, 0, 0.08);
    --wf-border-light: #E2E8F0;
    --wf-border-medium: #CBD5E1;
    --wf-border-hover: #94A3B8;
    --wf-text-primary: #0F172A;
    --wf-text-secondary: #334155;
    --wf-text-muted: #64748B;
    
    /* Accents & Badges */
    --wf-accent: #0284C7;
    --wf-accent-glow: rgba(2, 132, 199, 0.06);
    --wf-badge-bg: #F1F5F9;
    --wf-badge-border: #CBD5E1;
    --wf-badge-verified-bg: rgba(234, 88, 12, 0.08);
    --wf-badge-verified-border: rgba(234, 88, 12, 0.25);
    --wf-badge-verified-text: #C2410C;

    --wf-radius-sm: 8px;
    --wf-radius-md: 12px;
    --wf-radius-lg: 16px;
    --wf-radius-full: 9999px;
    
    --wf-shadow-card: 0 1px 3px rgba(15, 23, 42, 0.04), 0 1px 2px rgba(15, 23, 42, 0.02);
    --wf-shadow-card-hover: 0 12px 30px -4px rgba(15, 23, 42, 0.08), 0 4px 12px -2px rgba(15, 23, 42, 0.04);
    --wf-transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ==========================================================================
   Hero Section — Synchronized with Homepage Hero
   ========================================================================== */
.wf-hero {
    position: relative;
    background-color: var(--wf-canvas-bg);
    background-image: 
        radial-gradient(circle at 50% 0%, rgba(2, 132, 199, 0.04) 0%, transparent 65%),
        radial-gradient(circle at 80% 20%, rgba(234, 88, 12, 0.03) 0%, transparent 50%);
    border-bottom: 1px solid var(--wf-border-hairline);
    padding: 72px 24px 60px;
    overflow: hidden;
}

.wf-hero-inner {
    max-width: 920px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 2;
}

/* Badge — Matching .home2-founder-badge */
.wf-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 18px;
    background: var(--wf-badge-bg);
    border: 1px solid var(--wf-badge-border);
    border-radius: var(--wf-radius-full);
    color: var(--wf-text-primary);
    font-family: var(--wf-font-sans);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: -0.01em;
    margin-bottom: 20px;
}

.wf-badge svg {
    color: var(--wf-accent);
    flex-shrink: 0;
}

/* Hero Title — EXACT same as .home2-hero-title */
.wf-hero-title {
    font-family: var(--wf-font-heading) !important;
    font-size: clamp(2.4rem, 4.5vw, 3.65rem);
    font-weight: 800 !important;
    color: var(--wf-text-primary) !important;
    line-height: 1.15 !important;
    letter-spacing: -0.03em !important;
    margin: 0 0 16px 0;
}

.wf-hero-title .wf-highlight {
    color: var(--wf-accent);
}

/* Hero Subtitle — Matching .home2-hero-lead */
.wf-hero-subtitle {
    font-family: var(--wf-font-sans);
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--wf-text-secondary);
    max-width: 740px;
    margin: 0 auto 32px;
    font-weight: 400;
}

/* Hero Category Stat Pills */
.wf-hero-stats {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
}

.wf-stat-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 18px;
    background: var(--wf-badge-bg);
    border: 1px solid var(--wf-badge-border);
    border-radius: var(--wf-radius-full);
    color: var(--wf-text-primary);
    font-family: var(--wf-font-sans);
    font-size: 13.5px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--wf-transition);
}

.wf-stat-pill:hover {
    background: #E2E8F0;
    border-color: var(--wf-border-hover);
    transform: translateY(-1px);
}

.wf-stat-pill.active {
    background: #0F172A;
    border-color: #0F172A;
    color: #FFFFFF;
}

.wf-stat-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    background: rgba(15, 23, 42, 0.08);
    color: inherit;
    font-family: var(--wf-font-sans);
    font-size: 11.5px;
    font-weight: 700;
    border-radius: var(--wf-radius-full);
}

.wf-stat-pill.active .wf-stat-count {
    background: rgba(255, 255, 255, 0.2);
    color: #FFFFFF;
}

/* ==========================================================================
   Toolbar & Sticky Filter
   ========================================================================== */
.wf-toolbar-wrapper {
    position: sticky;
    top: 70px;
    z-index: 40;
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--wf-border-light);
    box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.03);
    transition: var(--wf-transition);
}

.wf-toolbar-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 14px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

/* Search Box */
.wf-search-box {
    position: relative;
    flex: 1;
    min-width: 260px;
    max-width: 440px;
}

.wf-search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--wf-text-muted);
    pointer-events: none;
}

.wf-search-input {
    width: 100%;
    padding: 10px 38px 10px 42px;
    background: var(--wf-surface-subtle);
    border: 1px solid var(--wf-border-light);
    border-radius: var(--wf-radius-full);
    font-family: var(--wf-font-sans) !important;
    font-size: 14px;
    color: var(--wf-text-primary);
    transition: var(--wf-transition);
    outline: none;
}

.wf-search-input:focus {
    background: #FFFFFF;
    border-color: #0F172A;
    box-shadow: 0 0 0 3px rgba(15, 23, 42, 0.08);
}

.wf-search-clear {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    padding: 4px;
    cursor: pointer;
    color: var(--wf-text-muted);
    display: none;
    border-radius: 50%;
    align-items: center;
    justify-content: center;
}

.wf-search-clear:hover {
    color: var(--wf-text-primary);
}

/* Filter Buttons */
.wf-filter-tabs {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.wf-filter-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 16px;
    background: var(--wf-badge-bg);
    border: 1px solid var(--wf-badge-border);
    border-radius: var(--wf-radius-full);
    color: var(--wf-text-primary);
    font-family: var(--wf-font-sans) !important;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--wf-transition);
}

.wf-filter-btn:hover {
    background: #E2E8F0;
    border-color: var(--wf-border-hover);
}

.wf-filter-btn.active {
    background: #0F172A;
    border-color: #0F172A;
    color: #FFFFFF;
}

.wf-filter-count {
    font-size: 11.5px;
    opacity: 0.8;
}

.wf-counter-text {
    font-family: var(--wf-font-sans);
    font-size: 13px;
    color: var(--wf-text-muted);
    font-weight: 500;
    white-space: nowrap;
}

/* ==========================================================================
   Main Grid Layout
   ========================================================================== */
.wf-main-content {
    background-color: var(--wf-surface-subtle);
    padding: 56px 24px 80px;
    min-height: 60vh;
}

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

.wf-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 28px;
}

/* Workflow Card */
.wf-card {
    display: flex;
    flex-direction: column;
    background: var(--wf-surface-card);
    border: 1px solid var(--wf-border-light);
    border-radius: var(--wf-radius-lg);
    overflow: hidden;
    box-shadow: var(--wf-shadow-card);
    transition: var(--wf-transition);
    text-decoration: none;
    position: relative;
}

.wf-card:hover {
    transform: translateY(-3px);
    border-color: var(--wf-border-hover);
    box-shadow: var(--wf-shadow-card-hover);
}

/* Media Thumbnail */
.wf-card-media {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: #0F172A;
}

.wf-card-thumb {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.wf-card:hover .wf-card-thumb {
    transform: scale(1.04);
}

.wf-card-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
    color: rgba(255, 255, 255, 0.3);
}

/* Badges Overlay */
.wf-card-badges-top {
    position: absolute;
    top: 12px;
    left: 12px;
    right: 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    pointer-events: none;
}

.wf-card-cat-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--wf-radius-full);
    color: #FFFFFF;
    font-family: var(--wf-font-sans);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.wf-card-price-badge {
    padding: 4px 10px;
    border-radius: var(--wf-radius-full);
    font-family: var(--wf-font-sans);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.wf-card-price-free {
    background: #10B981;
    color: #FFFFFF;
}

.wf-card-price-pro {
    background: #0F172A;
    color: #FFFFFF;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Card Body */
.wf-card-body {
    padding: 22px 24px 20px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.wf-card-meta-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    font-family: var(--wf-font-sans);
    font-size: 12px;
    color: var(--wf-text-muted);
}

.wf-card-date {
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.wf-card-version {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    background: #F1F5F9;
    border-radius: var(--wf-radius-full);
    font-family: var(--wf-font-mono);
    font-weight: 600;
    color: #475569;
    font-size: 11px;
}

/* Card Title — Plus Jakarta Sans 700 */
.wf-card-title {
    font-family: var(--wf-font-heading) !important;
    font-size: 1.125rem !important;
    font-weight: 700 !important;
    color: var(--wf-text-primary) !important;
    line-height: 1.35 !important;
    letter-spacing: -0.025em !important;
    margin: 0 0 10px 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.2s ease;
}

.wf-card:hover .wf-card-title {
    color: var(--wf-accent);
}

/* Card Excerpt — Inter */
.wf-card-excerpt {
    font-family: var(--wf-font-sans);
    font-size: 13.5px;
    line-height: 1.65;
    color: var(--wf-text-secondary);
    margin: 0 0 18px 0;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

/* Tech Stack Chips */
.wf-card-tech-row {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 20px;
}

.wf-tech-chip {
    display: inline-flex;
    align-items: center;
    padding: 3px 9px;
    background: #F1F5F9;
    border: 1px solid #E2E8F0;
    border-radius: 6px;
    font-family: var(--wf-font-sans);
    font-size: 11.5px;
    font-weight: 500;
    color: #334155;
    white-space: nowrap;
}

/* Card Footer */
.wf-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 16px;
    border-top: 1px solid var(--wf-border-light);
}

.wf-card-author {
    display: flex;
    align-items: center;
    gap: 6px;
    font-family: var(--wf-font-sans);
    font-size: 12px;
    font-weight: 500;
    color: var(--wf-text-muted);
}

.wf-card-cta {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--wf-font-sans);
    font-size: 13px;
    font-weight: 600;
    color: #0F172A;
    transition: var(--wf-transition);
}

.wf-card:hover .wf-card-cta {
    color: var(--wf-accent);
    transform: translateX(3px);
}

/* ==========================================================================
   Empty State
   ========================================================================== */
.wf-empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 80px 24px;
    background: #FFFFFF;
    border: 1px dashed var(--wf-border-medium);
    border-radius: var(--wf-radius-lg);
    display: none;
}

.wf-empty-state.visible {
    display: block;
}

.wf-empty-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    border-radius: 50%;
    background: #F1F5F9;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--wf-text-muted);
}

.wf-empty-title {
    font-family: var(--wf-font-heading) !important;
    font-size: 1.25rem !important;
    font-weight: 700 !important;
    letter-spacing: -0.02em !important;
    color: var(--wf-text-primary);
    margin: 0 0 8px 0;
}

.wf-empty-desc {
    font-family: var(--wf-font-sans);
    font-size: 14px;
    color: var(--wf-text-muted);
    max-width: 440px;
    margin: 0 auto 24px;
    line-height: 1.6;
}

.wf-btn-reset {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    background: #0F172A;
    color: #FFFFFF;
    border: none;
    border-radius: var(--wf-radius-full);
    font-family: var(--wf-font-sans);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--wf-transition);
}

.wf-btn-reset:hover {
    background: #1E293B;
}

/* ==========================================================================
   Executive Bottom CTA — Light Slate
   ========================================================================== */
.wf-cta-section {
    background: #FFFFFF;
    border-top: 1px solid var(--wf-border-hairline);
    padding: 72px 24px;
    position: relative;
    overflow: hidden;
}

.wf-cta-inner {
    max-width: 860px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 2;
}

.wf-cta-title {
    font-family: var(--wf-font-heading) !important;
    font-size: clamp(1.6rem, 3vw, 2.25rem) !important;
    font-weight: 800 !important;
    color: var(--wf-text-primary) !important;
    letter-spacing: -0.03em !important;
    margin: 0 0 16px 0;
}

.wf-cta-desc {
    font-family: var(--wf-font-sans);
    font-size: 1.05rem;
    line-height: 1.65;
    color: var(--wf-text-secondary);
    max-width: 640px;
    margin: 0 auto 32px;
}

.wf-cta-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
}

.wf-cta-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: #0F172A;
    color: #FFFFFF;
    font-family: var(--wf-font-sans);
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--wf-radius-full);
    text-decoration: none;
    transition: var(--wf-transition);
}

.wf-cta-primary:hover {
    background: #1E293B;
    transform: translateY(-2px);
}

.wf-cta-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--wf-badge-bg);
    border: 1px solid var(--wf-badge-border);
    color: var(--wf-text-primary);
    font-family: var(--wf-font-sans);
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--wf-radius-full);
    text-decoration: none;
    transition: var(--wf-transition);
}

.wf-cta-secondary:hover {
    background: #E2E8F0;
    border-color: var(--wf-border-hover);
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */
@media (max-width: 768px) {
    .wf-hero {
        padding: 50px 16px 40px;
    }
    
    .wf-toolbar-wrapper {
        top: 60px;
    }
    
    .wf-toolbar-container {
        padding: 12px 16px;
        flex-direction: column;
        align-items: stretch;
    }
    
    .wf-search-box {
        max-width: 100%;
        min-width: 100%;
    }
    
    .wf-filter-tabs {
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 4px;
        -webkit-overflow-scrolling: touch;
    }
    
    .wf-main-content {
        padding: 36px 16px 60px;
    }
    
    .wf-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .wf-card-body {
        padding: 18px 20px;
    }
}