/* ==========================================================================
   Related Tools Section — Reusable Component
   File: ~/css/shared/related-tools.css
   Usage: Add @RenderSection("Head") or link directly in _Layout.cshtml
   Compatible with: All tool pages — UUID, Base64, Password, Hash, etc.
   ========================================================================== */

/* ==========================================================================
   1. CSS CUSTOM PROPERTIES — Light Mode Defaults
   ========================================================================== */
:root {
    --rt-bg-section:        #f8fafc;
    --rt-bg-card:           #ffffff;
    --rt-bg-card-hover:     #f8faff;
    --rt-border-card:       #e5e7eb;
    --rt-border-hover:      #6366f1;
    --rt-shadow-card:       0 1px 4px rgba(0, 0, 0, 0.07);
    --rt-shadow-hover:      0 8px 28px rgba(99, 102, 241, 0.15);
    --rt-text-heading:      #111827;
    --rt-text-title:        #1f2937;
    --rt-text-desc:         #6b7280;
    --rt-text-desc-hover:   #4b5563;
    --rt-icon-bg:           #f0f0ff;
    --rt-icon-bg-hover:     #e0e7ff;
    --rt-accent:            #6366f1;
    --rt-accent-soft:       rgba(99, 102, 241, 0.08);
    --rt-radius:            14px;
    --rt-transition:        all 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   2. CSS CUSTOM PROPERTIES — Dark Mode Overrides
   Covers: .dark-mode | [data-theme="dark"] | [data-bs-theme="dark"]
   ========================================================================== */
.dark-mode,
[data-theme="dark"],
[data-bs-theme="dark"] {
    --rt-bg-section:        #0f1117;
    --rt-bg-card:           #1a1d2e;
    --rt-bg-card-hover:     #1e2235;
    --rt-border-card:       #2a2d3e;
    --rt-border-hover:      #6366f1;
    --rt-shadow-card:       0 1px 4px rgba(0, 0, 0, 0.35);
    --rt-shadow-hover:      0 8px 28px rgba(99, 102, 241, 0.25);
    --rt-text-heading:      #f1f5f9;
    --rt-text-title:        #e2e8f0;
    --rt-text-desc:         #94a3b8;
    --rt-text-desc-hover:   #cbd5e1;
    --rt-icon-bg:           #252840;
    --rt-icon-bg-hover:     #2d3155;
    --rt-accent-soft:       rgba(99, 102, 241, 0.12);
}

/* OS-level dark mode fallback (no JS class needed) */
@media (prefers-color-scheme: dark) {
    :root:not(.light-mode):not([data-theme="light"]):not([data-bs-theme="light"]) {
        --rt-bg-section:        #0f1117;
        --rt-bg-card:           #1a1d2e;
        --rt-bg-card-hover:     #1e2235;
        --rt-border-card:       #2a2d3e;
        --rt-border-hover:      #6366f1;
        --rt-shadow-card:       0 1px 4px rgba(0, 0, 0, 0.35);
        --rt-shadow-hover:      0 8px 28px rgba(99, 102, 241, 0.25);
        --rt-text-heading:      #f1f5f9;
        --rt-text-title:        #e2e8f0;
        --rt-text-desc:         #94a3b8;
        --rt-text-desc-hover:   #cbd5e1;
        --rt-icon-bg:           #252840;
        --rt-icon-bg-hover:     #2d3155;
        --rt-accent-soft:       rgba(99, 102, 241, 0.12);
    }
}

/* ==========================================================================
   3. SECTION WRAPPER
   ========================================================================== */
.related-tools {
    background: var(--rt-bg-section);
    border-radius: 20px;
    padding: 56px 40px;
    margin: 48px 0 64px;
    transition: var(--rt-transition);
}

.related-tools .related-tools-header {
    text-align: center;
    margin-bottom: 40px;
}

.related-tools .related-tools-header h2 {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--rt-text-heading);
    margin: 0 0 10px;
    letter-spacing: -0.02em;
    transition: color 0.2s ease;
}

.related-tools .related-tools-header p {
    font-size: 1rem;
    color: var(--rt-text-desc);
    margin: 0;
    transition: color 0.2s ease;
}

/* ==========================================================================
   4. GRID LAYOUT
   ========================================================================== */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    list-style: none;
    margin: 0;
    padding: 0;
}

/* 3-column variant — add class="tools-grid tools-grid--3" */
.tools-grid--3 {
    grid-template-columns: repeat(3, 1fr);
}

/* 2-column variant — add class="tools-grid tools-grid--2" */
.tools-grid--2 {
    grid-template-columns: repeat(2, 1fr);
}

/* ==========================================================================
   5. TOOL CARD
   ========================================================================== */
.tool-card {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 28px 20px 24px;
    background: var(--rt-bg-card);
    border: 1px solid var(--rt-border-card);
    border-radius: var(--rt-radius);
    box-shadow: var(--rt-shadow-card);
    text-align: center;
    text-decoration: none;
    color: inherit;
    cursor: pointer;
    overflow: hidden;
    transition: var(--rt-transition);
}

/* Subtle top accent line */
.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--rt-accent), #818cf8);
    opacity: 0;
    transition: opacity 0.22s ease;
    border-radius: var(--rt-radius) var(--rt-radius) 0 0;
}

/* Subtle background glow on hover */
.tool-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--rt-accent-soft);
    opacity: 0;
    transition: opacity 0.22s ease;
    border-radius: var(--rt-radius);
    pointer-events: none;
}

.tool-card:hover,
.tool-card:focus-visible {
    background: var(--rt-bg-card-hover);
    border-color: var(--rt-border-hover);
    box-shadow: var(--rt-shadow-hover);
    transform: translateY(-5px);
    text-decoration: none;
    color: inherit;
    outline: none;
}

.tool-card:hover::before,
.tool-card:focus-visible::before {
    opacity: 1;
}

.tool-card:hover::after,
.tool-card:focus-visible::after {
    opacity: 1;
}

/* Focus ring for keyboard navigation */
.tool-card:focus-visible {
    outline: 2px solid var(--rt-accent);
    outline-offset: 2px;
}

/* ==========================================================================
   6. TOOL ICON
   ========================================================================== */
.tool-card .tool-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: var(--rt-icon-bg);
    border-radius: 14px;
    font-size: 1.75rem;
    line-height: 1;
    flex-shrink: 0;
    transition: var(--rt-transition);
    position: relative;
    z-index: 1;
}

.tool-card:hover .tool-icon,
.tool-card:focus-visible .tool-icon {
    background: var(--rt-icon-bg-hover);
    transform: scale(1.08);
}

/* ==========================================================================
   7. TOOL CARD TEXT
   ========================================================================== */
.tool-card h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--rt-text-title);
    margin: 0;
    line-height: 1.3;
    transition: color 0.2s ease;
    position: relative;
    z-index: 1;
}

.tool-card p {
    font-size: 0.875rem;
    color: var(--rt-text-desc);
    line-height: 1.55;
    margin: 0;
    transition: color 0.2s ease;
    position: relative;
    z-index: 1;
}

.tool-card:hover h3,
.tool-card:focus-visible h3 {
    color: var(--rt-accent);
}

.tool-card:hover p,
.tool-card:focus-visible p {
    color: var(--rt-text-desc-hover);
}

/* ==========================================================================
   8. BADGE (optional — add <span class="tool-badge">New</span> inside card)
   ========================================================================== */
.tool-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 2px 8px;
    border-radius: 20px;
    background: var(--rt-accent);
    color: #ffffff;
    line-height: 1.6;
    z-index: 2;
}

.tool-badge--new    { background: #10b981; }
.tool-badge--hot    { background: #ef4444; }
.tool-badge--beta   { background: #f59e0b; color: #1f2937; }
.tool-badge--update { background: #6366f1; }

/* ==========================================================================
   9. "VIEW ALL TOOLS" LINK (optional footer row)
   ========================================================================== */
.related-tools .view-all-link {
    display: flex;
    justify-content: center;
    margin-top: 32px;
}

.related-tools .view-all-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    background: transparent;
    border: 1.5px solid var(--rt-border-hover);
    border-radius: 50px;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--rt-accent);
    text-decoration: none;
    transition: var(--rt-transition);
}

.related-tools .view-all-btn:hover {
    background: var(--rt-accent);
    color: #ffffff;
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.30);
}

.related-tools .view-all-btn svg {
    transition: transform 0.2s ease;
}

.related-tools .view-all-btn:hover svg {
    transform: translateX(3px);
}

/* ==========================================================================
   10. RESPONSIVE BREAKPOINTS
   ========================================================================== */

/* Tablet — 2 columns */
@media (max-width: 1024px) {
    .tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .related-tools {
        padding: 40px 24px;
    }
}

/* Large mobile — 2 columns still, tighter padding */
@media (max-width: 640px) {
    .tools-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
    }

    .related-tools {
        padding: 32px 16px;
        margin: 32px 0 48px;
        border-radius: 14px;
    }

    .related-tools .related-tools-header h2 {
        font-size: 1.375rem;
    }

    .tool-card {
        padding: 20px 14px 18px;
        gap: 10px;
    }

    .tool-card .tool-icon {
        width: 48px;
        height: 48px;
        font-size: 1.5rem;
    }

    .tool-card h3 {
        font-size: 0.9375rem;
    }

    .tool-card p {
        font-size: 0.8125rem;
    }
}

/* Small mobile — 1 column */
@media (max-width: 400px) {
    .tools-grid {
        grid-template-columns: 1fr;
    }
}