/**
 * QuickTools — Category Navigation CSS
 * Desktop: horizontal tabs in topbar
 * Mobile: scrollable pill bar below topbar
 */

/* ═══════════════════════════════════════════
   DESKTOP CATEGORY NAV (inside topbar)
   ═══════════════════════════════════════════ */

.cat-nav {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.cat-nav__link {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    transition: background-color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast), opacity var(--transition-fast), transform var(--transition-fast);
    white-space: nowrap;
}

.cat-nav__link:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.cat-nav__link--active {
    color: var(--accent);
    background: var(--accent-bg);
}

.cat-nav__icon {
    font-size: 14px;
    line-height: 1;
}

.cat-nav__label {
    line-height: 1;
}

/* Hide category labels on smaller desktop, show icons only */
@media (max-width: 1100px) and (min-width: 769px) {
    .cat-nav__label {
        display: none;
    }
    .cat-nav__link {
        padding: 6px 10px;
    }
    .cat-nav__icon {
        font-size: 16px;
    }
}

/* Hide desktop cat-nav on mobile */
@media (max-width: 768px) {
    .cat-nav {
        display: none !important;
    }
}


/* ═══════════════════════════════════════════
   MOBILE CATEGORY BAR (scrollable tabs)
   ═══════════════════════════════════════════ */

.cat-bar {
    display: none;
    position: sticky;
    top: 56px; /* Below topbar */
    z-index: 90;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-light);
    padding: 0;
}

@media (max-width: 768px) {
    .cat-bar {
        display: block;
    }
}

.cat-bar__scroll {
    display: flex;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scroll-snap-type: x mandatory;
    scrollbar-width: none; /* Firefox */
    padding: 8px 12px;
    gap: 6px;
}

.cat-bar__scroll::-webkit-scrollbar {
    display: none; /* Chrome/Safari */
}

.cat-bar__tab {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    text-decoration: none;
    white-space: nowrap;
    flex-shrink: 0;
    scroll-snap-align: start;
    transition: background-color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast), opacity var(--transition-fast), transform var(--transition-fast);
    border: 1.5px solid transparent;
}

.cat-bar__tab:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.cat-bar__tab--active {
    color: var(--text-inverse);
    background: var(--accent);
    border-color: var(--accent);
}

/* Active tab uses its category color */
.cat-bar__tab--active[data-category="social"]     { background: #8B5CF6; border-color: #8B5CF6; }
.cat-bar__tab--active[data-category="ai"]          { background: #06B6D4; border-color: #06B6D4; }
.cat-bar__tab--active[data-category="calculator"]  { background: #EF4444; border-color: #EF4444; }
.cat-bar__tab--active[data-category="generator"]   { background: #F59E0B; border-color: #F59E0B; }
.cat-bar__tab--active[data-category="utility"]     { background: #3B82F6; border-color: #3B82F6; }
.cat-bar__tab--active[data-category="all"]         { background: var(--accent); border-color: var(--accent); }

.cat-bar__tab-icon {
    font-size: 14px;
    line-height: 1;
}

.cat-bar__tab-label {
    line-height: 1;
}


/* ═══════════════════════════════════════════
   HERO SECTION (updated with search + pills)
   ═══════════════════════════════════════════ */

.hero {
    text-align: center;
    padding: var(--space-6) var(--space-4) var(--space-3);
    max-width: 720px;
    margin: 0 auto;
}

.hero__title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 var(--space-2);
}

.hero__subtitle {
    font-size: var(--font-size-lg);
    color: var(--accent);
    font-weight: 500;
    margin: 0 0 var(--space-2);
}

.hero__desc {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin: 0 0 var(--space-4);
}

/* Search bar */
.hero__search {
    position: relative;
    max-width: 460px;
    margin: 0 auto var(--space-3);
}

.hero__search-input {
    width: 100%;
    padding: 12px 16px 12px 44px;
    border-radius: var(--radius-full);
    border: 1.5px solid var(--border);
    background: var(--bg-elevated);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    font-family: var(--font-sans);
    transition: box-shadow var(--transition-fast), opacity var(--transition-fast), transform var(--transition-fast);
    box-sizing: border-box;
}

.hero__search-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-bg);
}

.hero__search-input::placeholder {
    color: var(--text-tertiary);
}

.hero__search-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 16px;
    pointer-events: none;
}

/* Category pills — horizontal scroll on overflow */
.hero__pills {
    display: flex;
    flex-wrap: nowrap;
    justify-content: center;
    gap: 8px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 4px;
}
.hero__pills::-webkit-scrollbar { display: none; }
.hero__pill { scroll-snap-align: start; flex-shrink: 0; }

.hero__pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    border-radius: var(--radius-full);
    border: 1.5px solid var(--border);
    background: var(--bg-elevated);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: background-color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast), opacity var(--transition-fast), transform var(--transition-fast);
    white-space: nowrap;
}

.hero__pill:hover {
    border-color: var(--text-tertiary);
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.hero__pill--active {
    color: white;
    background: var(--accent);
    border-color: var(--accent);
}

/* Active pills use category colors */
.hero__pill--active[data-filter="social"]     { background: #8B5CF6; border-color: #8B5CF6; }
.hero__pill--active[data-filter="ai"]          { background: #06B6D4; border-color: #06B6D4; }
.hero__pill--active[data-filter="calculator"]  { background: #EF4444; border-color: #EF4444; }
.hero__pill--active[data-filter="generator"]   { background: #F59E0B; border-color: #F59E0B; }
.hero__pill--active[data-filter="utility"]     { background: #3B82F6; border-color: #3B82F6; }

.hero__pill-count {
    font-size: var(--font-size-xs);
    opacity: 0.85; /* WCAG AA contrast fix */
}

/* Hide hero pills on mobile (cat-bar handles it) */
@media (max-width: 768px) {
    .hero__pills {
        display: none;
    }
    .hero {
        padding: var(--space-4) var(--space-4) var(--space-2);
    }
    .hero__title {
        font-size: var(--font-size-2xl);
    }
}


/* ═══════════════════════════════════════════
   HOMEPAGE SECTIONS (updated)
   ═══════════════════════════════════════════ */

.homepage-section {
    padding: 0 var(--space-4) var(--space-6);
    max-width: 1200px;
    margin: 0 auto;
}

.homepage-section__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-2);
}

.homepage-section__title {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 var(--space-4);
}

.homepage-section__cat-icon {
    font-size: 24px;
}

.homepage-section__count {
    font-size: var(--font-size-sm);
    font-weight: 400;
    color: var(--text-tertiary);
    background: var(--bg-tertiary);
    padding: 2px 8px;
    border-radius: var(--radius-full);
}


/* ═══════════════════════════════════════════
   TOOL GRID (updated)
   ═══════════════════════════════════════════ */

.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: var(--space-4);
}

@media (max-width: 640px) {
    .tool-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-3);
    }
}

@media (max-width: 380px) {
    .tool-grid {
        grid-template-columns: 1fr;
    }
}

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

.tool-card-item {
    background: var(--bg-elevated);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    border-top: 3px solid var(--card-accent, var(--accent));
    transition: all var(--transition-base);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.tool-card-item:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
    border-top-color: var(--card-accent, var(--accent));
}

.tool-card-item__icon {
    font-size: 28px;
    margin-bottom: var(--space-3);
    line-height: 1;
}

.tool-card-item__title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-1);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.tool-card-item__desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.5;
    flex-grow: 1;
}

.tool-card-item__badge {
    font-size: var(--font-size-xs);
    font-weight: 600;
    padding: 1px 6px;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.tool-card-item__badge--ai {
    background: rgba(6, 182, 212, 0.15);
    color: #0E7490; /* WCAG AA: 4.6:1 on light cyan bg — was #06B6D4 (2.8:1 FAIL) */
}

@media (max-width: 640px) {
    .tool-card-item {
        padding: var(--space-4);
    }
    .tool-card-item__icon {
        font-size: 24px;
        margin-bottom: var(--space-2);
    }
    .tool-card-item__title {
        font-size: var(--font-size-sm);
    }
    .tool-card-item__desc {
        font-size: var(--font-size-xs);
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
}


/* ═══════════════════════════════════════════
   EMPTY STATE
   ═══════════════════════════════════════════ */

.empty-state {
    text-align: center;
    padding: var(--space-10) var(--space-6);
    color: var(--text-tertiary);
}

.empty-state__icon {
    font-size: 48px;
    display: block;
    margin-bottom: var(--space-3);
    opacity: 0.5;
}

.empty-state__text {
    display: block;
    font-size: var(--font-size-base);
}


/* ═══════════════════════════════════════════
   CTA SECTION
   ═══════════════════════════════════════════ */

.cta-section {
    max-width: 600px;
    margin: var(--space-6) auto var(--space-10);
    text-align: center;
}

.cta-section__inner {
    padding: var(--space-8);
}


/* ═══════════════════════════════════════════
   ANIMATION: section reveal
   ═══════════════════════════════════════════ */

.tool-category-section {
    animation: fadeInUp 0.3s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ═══════════════════════════════════════════
   TOPBAR CATEGORY NAV LINKS
   ═══════════════════════════════════════════ */

.topbar__nav-link--cat {
    font-size: var(--font-size-sm);
    transition: opacity var(--transition-fast);
}

.topbar__nav-link--cat:hover {
    color: var(--cat-color, var(--accent)) !important;
}

/* Hide labels on medium screens, keep icons */
@media (max-width: 1100px) {
    .topbar__nav-label {
        display: none;
    }
}

/* Hide entire cat nav on mobile (burger menu takes over) */
@media (max-width: 768px) {
    .topbar__nav-link--cat {
        display: none;
    }
}