```
/* ============================================
   AI NEXUS HUB - COMPONENTS
   Reusable UI Components
   ============================================ */

/* =========================================
   Search Suggestions & Live Results
   ========================================= */
.search-suggestions {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    right: 0;
    background: rgba(20, 20, 20, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--space-4);
    box-shadow:
        0 20px 50px -10px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(255, 255, 255, 0.05);
    z-index: 100;
    text-align: left;
    animation: slideDown 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    max-height: 600px;
    overflow-y: auto;
}

.suggestion-quote {
    font-size: var(--font-size-sm);
    color: var(--color-primary-300);
    background: linear-gradient(to right, rgba(var(--primary-rgb), 0.1), transparent);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
    font-style: italic;
    font-weight: 500;
    border-left: 3px solid var(--color-primary-500);
}

.suggestions-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.suggestion-item {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-3);
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid transparent;
    transition: all var(--transition-fast);
    text-decoration: none;
    color: currentColor;
}

.suggestion-item:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(var(--primary-rgb), 0.2);
    transform: translateX(4px);
}

.suggestion-icon {
    font-size: 1.5rem;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
}

.suggestion-details {
    flex: 1;
    min-width: 0;
    /* Text truncation fix */
}

.suggestion-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-1);
}

.suggestion-name {
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--color-neutral-100);
    margin: 0;
}

.suggestion-category {
    font-size: var(--font-size-xs);
    color: var(--color-primary-400);
    background: rgba(var(--primary-rgb), 0.1);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
}

.suggestion-desc {
    font-size: 0.85rem;
    color: var(--color-neutral-400);
    margin: 0 0 var(--space-2) 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.suggestion-meta {
    display: flex;
    gap: var(--space-3);
    font-size: var(--font-size-xs);
    color: var(--color-neutral-500);
}

.suggestion-footer {
    text-align: center;
    margin-top: var(--space-3);
    padding-top: var(--space-2);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.header {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background: rgba(15, 15, 20, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    height: var(--header-height);
}

.header .container {
    height: 100%;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-neutral-50);
    text-decoration: none;
    transition: transform var(--transition-fast);
    line-height: 1;
    /* Fix vertical alignment */
}

.logo:hover {
    transform: scale(1.02);
}

.logo span {
    display: block;
    /* Ensure flex alignment works */
    padding-top: 2px;
    /* Fine-tune optical alignment */
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    line-height: 1;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    list-style: none;
}

.menu-toggle {
    display: none;
    /* Hidden by default on desktop */
    background: none;
    border: none;
    color: var(--color-neutral-50);
    font-size: var(--font-size-2xl);
    cursor: pointer;
    padding: var(--space-2);
}

.nav-link {
    color: var(--color-neutral-200);
    font-weight: var(--font-weight-medium);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--color-neutral-50);
    background: rgba(255, 255, 255, 0.05);
}

.nav-link.active {
    color: var(--color-primary-300);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
}


/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
    font-family: inherit;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-neutral-50);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary-400);
    border: 2px solid var(--color-primary-400);
}

.btn-outline:hover:not(:disabled) {
    background: var(--color-primary-400);
    color: white;
}

.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-lg);
}

/* ============================================
   SEARCH BAR
   ============================================ */
.search-container {
    position: relative;
    width: 100%;
    max-width: 600px;
}

.search-bar {
    width: 100%;
    padding: var(--space-4) var(--space-6);
    padding-left: var(--space-12);
    font-size: var(--font-size-lg);
    font-family: inherit;
    color: var(--color-neutral-50);
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(10px);
    transition: all var(--transition-fast);
}

.search-bar:focus {
    outline: none;
    border-color: var(--color-primary-400);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.1);
}

.search-bar::placeholder {
    color: var(--color-neutral-400);
}

.search-icon {
    position: absolute;
    left: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-neutral-400);
    font-size: var(--font-size-xl);
    pointer-events: none;
}

/* ============================================
   TOOL CARDS
   ============================================ */
.tool-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    transition: all var(--transition-base);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.tool-card:hover {
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: var(--shadow-xl);
}

.tool-card:hover::before {
    transform: scaleX(1);
}

.card-muted {
    background: rgba(255, 255, 255, 0.02);
    border: 1px dashed rgba(255, 255, 255, 0.1);
}

.tools-grid {
    display: grid;
    gap: var(--space-5);
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.tool-card-header {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}

.tool-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    background: var(--gradient-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.tool-card-content {
    flex: 1;
}

.tool-name {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-neutral-50);
    margin-bottom: var(--space-2);
}

.tool-description {
    font-size: var(--font-size-sm);
    color: var(--color-neutral-300);
    line-height: var(--line-height-normal);
    margin-bottom: var(--space-4);
}

.tool-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.tool-category,
.tool-pricing {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-1) var(--space-3);
    background: rgba(139, 92, 246, 0.15);
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-primary-300);
}

.tool-pricing {
    background: rgba(34, 197, 94, 0.1);
    border-color: rgba(34, 197, 94, 0.3);
    color: hsl(142, 71%, 65%);
}

.tool-rating {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-warning);
}

.tool-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.tag {
    padding: var(--space-1) var(--space-2);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    color: var(--color-neutral-300);
}

/* ============================================
   FILTERS & SORTING
   ============================================ */
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-6);
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-8);
}

.filter-group {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.filter-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-neutral-300);
}

.filter-select,
.sort-select {
    padding: var(--space-2) var(--space-4);
    padding-right: var(--space-8);
    font-size: var(--font-size-sm);
    font-family: inherit;
    color: var(--color-neutral-50);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23a0a0a0' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-3) center;
}

.filter-select:hover,
.sort-select:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
}

.filter-select:focus,
.sort-select:focus {
    outline: none;
    border-color: var(--color-primary-400);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

.filter-chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.filter-chip {
    padding: var(--space-2) var(--space-4);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--color-neutral-200);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-chip:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
}

.filter-chip.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    padding-top: var(--space-24);
    padding-bottom: var(--space-24);
    text-align: center;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.15) 0%, transparent 70%);
    animation: pulse 8s ease-in-out infinite;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: var(--font-size-6xl);
    font-weight: var(--font-weight-extrabold);
    background: linear-gradient(135deg, var(--color-neutral-50) 0%, var(--color-primary-300) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-6);
    line-height: 1.1;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-neutral-300);
    margin-bottom: var(--space-8);
    line-height: var(--line-height-relaxed);
}

.hero-actions {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--space-12);
}

/* ============================================
   LOADING STATES
   ============================================ */
.loading-spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--color-primary-400);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.skeleton {
    background: linear-gradient(90deg,
            rgba(255, 255, 255, 0.05) 25%,
            rgba(255, 255, 255, 0.1) 50%,
            rgba(255, 255, 255, 0.05) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-md);
}

/* ============================================
   MODAL
   ============================================ */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    padding: var(--space-4);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.modal-overlay.active {
    opacity: 1;
}

.modal {
    background: var(--color-neutral-800);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: transform var(--transition-base);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-6);
}

.modal-title {
    font-size: var(--font-size-2xl);
    margin-bottom: 0;
}

.modal-close {
    background: none;
    border: none;
    color: var(--color-neutral-400);
    font-size: var(--font-size-2xl);
    cursor: pointer;
    padding: var(--space-2);
    line-height: 1;
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: var(--color-neutral-50);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    margin-top: var(--space-24);
    padding: var(--space-12) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: var(--color-neutral-400);
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    align-items: center;
}

.footer-links {
    display: flex;
    gap: var(--space-6);
    flex-wrap: wrap;
    justify-content: center;
    list-style: none;
}

.footer-link {
    color: var(--color-neutral-300);
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--color-primary-400);
}

/* ============================================
   BACK TO TOP BUTTON
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    font-size: var(--font-size-2xl);
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: var(--z-fixed);
}

.back-to-top.active {
    opacity: 1;
    transform: translateY(0);
}

.back-to-top:hover {
    box-shadow: var(--shadow-xl), var(--shadow-glow);
    transform: translateY(-2px);
}