/* ========================================
   AINexus - AI Tools Portal Styles
   Light, Clean, Modern Design
   ======================================== */

/* CSS Variables - Light Theme */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-card: #ffffff;
    --bg-card-hover: #f8fafc;
    --bg-input: #f8fafc;
    --border-color: #e2e8f0;
    --border-hover: #cbd5e1;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #94a3b8;
    --accent-cyan: #0891b2;
    --accent-purple: #7c3aed;
    --accent-pink: #db2777;
    --accent-blue: #3b82f6;
    --gradient-primary: linear-gradient(135deg, #06b6d4 0%, #8b5cf6 100%);
    --gradient-hero: linear-gradient(135deg, #f0f9ff 0%, #faf5ff 50%, #f0fdfa 100%);
    --gradient-card: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 24px;
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.05), 0 2px 4px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.06), 0 4px 8px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.08), 0 8px 16px rgba(0, 0, 0, 0.04);
    --shadow-glow-cyan: 0 0 40px rgba(6, 182, 212, 0.15);
    --shadow-glow-purple: 0 0 40px rgba(139, 92, 246, 0.15);
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========================================
   Navigation
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition-smooth);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    padding: 12px 0;
    background: rgba(255, 255, 255, 0.95);
    border-bottom-color: var(--border-color);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    flex-shrink: 0;
}

.logo-accent {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-link {
    padding: 8px 16px;
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    white-space: nowrap;
}

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

.nav-link.active {
    color: var(--accent-cyan);
    background: rgba(6, 182, 212, 0.08);
}

.nav-dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(-10px);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 12px;
    min-width: 280px;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-xl);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px;
}

.nav-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--bg-tertiary);
}

.dropdown-icon {
    font-size: 1.3rem;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
}

.dropdown-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

.dropdown-desc {
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.search-box {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    min-width: 200px;
}

.search-box:focus-within {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.1);
    background: var(--bg-card);
}

.search-box .search-icon {
    color: var(--text-tertiary);
    flex-shrink: 0;
}

.search-box input {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-size: 0.88rem;
}

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

.search-box kbd {
    font-size: 0.7rem;
    padding: 2px 6px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-tertiary);
    font-family: inherit;
}
.search-box .search-btn {
    color: var(--text-tertiary);
    transition: color 0.2s;
}
.search-box .search-btn:hover {
    color: var(--accent-cyan);
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--gradient-primary);
    color: white;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    white-space: nowrap;
    box-shadow: var(--shadow-sm), 0 2px 8px rgba(6, 182, 212, 0.25);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md), 0 4px 16px rgba(6, 182, 212, 0.3);
}

.nav-mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.nav-mobile-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition-fast);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 140px 24px 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: var(--gradient-hero);
}

.hero-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.6;
    animation: orbFloat 25s ease-in-out infinite;
}

.hero-orb-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.25) 0%, transparent 70%);
    top: -150px;
    right: -50px;
    animation-delay: 0s;
}

.hero-orb-2 {
    width: 450px;
    height: 450px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.2) 0%, transparent 70%);
    bottom: -100px;
    left: -80px;
    animation-delay: -8s;
}

.hero-orb-3 {
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(219, 39, 119, 0.12) 0%, transparent 70%);
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -16s;
}

@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(40px, -40px) scale(1.08); }
    50% { transform: translate(-30px, 30px) scale(0.95); }
    75% { transform: translate(30px, 40px) scale(1.03); }
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(circle at 1px 1px, rgba(0, 0, 0, 0.03) 1px, transparent 0);
    background-size: 40px 40px;
}

.hero-content {
    position: relative;
    text-align: center;
    max-width: 880px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(6, 182, 212, 0.08);
    border: 1px solid rgba(6, 182, 212, 0.15);
    border-radius: 100px;
    font-size: 0.85rem;
    color: var(--accent-cyan);
    margin-bottom: 28px;
    animation: fadeInUp 0.6s ease-out;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--accent-cyan);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.3); }
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    line-height: 1.12;
    letter-spacing: -1.5px;
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease-out 0.1s both;
    color: var(--text-primary);
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 1.15rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 40px;
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 60px;
    animation: fadeInUp 0.6s ease-out 0.3s both;
}

.btn-hero-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    background: var(--gradient-primary);
    color: white;
    font-size: 1.05rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: var(--transition-bounce);
    box-shadow: var(--shadow-md), 0 8px 24px rgba(6, 182, 212, 0.25);
}

.btn-hero-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: var(--shadow-lg), 0 12px 32px rgba(6, 182, 212, 0.3);
}

.btn-hero-secondary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 1.05rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: var(--transition-bounce);
    box-shadow: var(--shadow-sm);
}

.btn-hero-secondary:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    animation: fadeInUp 0.6s ease-out 0.4s both;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.stat-number {
    font-size: 1.8rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.82rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border-color);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   Category Grid (Quick Access)
   ======================================== */
.section-categories {
    padding: 0 0 60px;
    position: relative;
    z-index: 1;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    max-width: 1280px;
    margin: -40px auto 0;
    padding: 0 24px;
    position: relative;
}

.category-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 18px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-sm);
}

.category-card:hover {
    background: var(--bg-card);
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.cat-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.cat-info {
    flex: 1;
}

.cat-name {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 2px;
    color: var(--text-primary);
}

.cat-count {
    font-size: 0.78rem;
    color: var(--text-tertiary);
}

/* ========================================
   Section Common Styles
   ======================================== */
.section-trending,
.section-newest {
    padding: 80px 0;
}

.section-categories-showcase,
.section-why {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.section-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 40px;
    gap: 20px;
}

.section-header.centered {
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.section-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-cyan);
    margin-bottom: 8px;
    letter-spacing: 0.5px;
}

.section-title {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.section-desc {
    font-size: 1rem;
    color: var(--text-secondary);
}

.btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--accent-cyan);
    border: 1px solid rgba(6, 182, 212, 0.25);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    white-space: nowrap;
    background: var(--bg-card);
}

.btn-ghost:hover {
    background: rgba(6, 182, 212, 0.08);
    border-color: var(--accent-cyan);
}

/* ========================================
   Tools Grid
   ======================================== */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.tool-card {
    display: flex;
    flex-direction: column;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-sm);
}

.tool-card:hover {
    background: var(--bg-card);
    border-color: var(--border-hover);
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl), var(--shadow-glow-cyan);
}

.tool-card-header {
    position: relative;
    padding: 24px 24px 0;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
}

.tool-logo-wrap {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
}

.tool-logo-text {
    font-size: 1.2rem;
    font-weight: 800;
    color: white;
    letter-spacing: 1px;
}

.tool-badges {
    display: flex;
    gap: 6px;
}

.badge-hot,
.badge-new {
    padding: 4px 10px;
    font-size: 0.7rem;
    font-weight: 700;
    border-radius: 100px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-hot {
    background: linear-gradient(135deg, #f97316, #ef4444);
    color: white;
}

.badge-new {
    background: linear-gradient(135deg, #10b981, #06b6d4);
    color: white;
}

.tool-card-body {
    padding: 20px 24px;
    flex: 1;
}

.tool-name {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.tool-desc {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 14px;
}

.tool-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.tag {
    padding: 4px 10px;
    font-size: 0.72rem;
    font-weight: 500;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    color: var(--text-secondary);
}

.tool-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.tool-meta {
    display: flex;
    gap: 16px;
}

.meta-item {
    font-size: 0.82rem;
    color: var(--text-tertiary);
}

.btn-visit {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-cyan);
    transition: var(--transition-fast);
}

.tool-card:hover .btn-visit {
    transform: translateX(4px);
}

/* ========================================
   Category Tabs & Showcase
   ======================================== */
.category-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 36px;
    overflow-x: auto;
    padding-bottom: 8px;
    -ms-overflow-style: none;
    scrollbar-width: none;
}

.category-tabs::-webkit-scrollbar {
    display: none;
}

.cat-tab {
    padding: 10px 20px;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    white-space: nowrap;
}

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

.cat-tab.active {
    color: white;
    background: var(--gradient-primary);
    border-color: transparent;
    box-shadow: var(--shadow-sm), 0 4px 12px rgba(6, 182, 212, 0.2);
}

.category-showcase-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.showcase-card {
    position: relative;
    padding: 28px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    transition: var(--transition-smooth);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.showcase-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition-fast);
}

.showcase-card:hover {
    background: var(--bg-card);
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.showcase-card:hover::before {
    opacity: 1;
}

.showcase-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    border-radius: var(--radius-md);
    margin-bottom: 16px;
}

.showcase-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.showcase-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

.showcase-count {
    font-size: 0.82rem;
    color: var(--text-tertiary);
}

.showcase-count strong {
    color: var(--accent-cyan);
    font-weight: 600;
}

/* ========================================
   Newest Tools List
   ======================================== */
.newest-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.newest-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-xs);
}

.newest-item:hover {
    background: var(--bg-card);
    border-color: var(--border-hover);
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

.newest-rank {
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--text-tertiary);
    min-width: 40px;
}

.newest-logo {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: 800;
    color: white;
    flex-shrink: 0;
}

.newest-info {
    flex: 1;
    min-width: 0;
}

.newest-name {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
}

.badge-new-inline {
    padding: 2px 8px;
    font-size: 0.65rem;
    font-weight: 700;
    background: linear-gradient(135deg, #10b981, #06b6d4);
    color: white;
    border-radius: 100px;
    text-transform: uppercase;
}

.newest-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.newest-tags {
    display: flex;
    gap: 6px;
}

.tag-sm {
    padding: 2px 8px;
    font-size: 0.7rem;
    font-weight: 500;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    color: var(--text-tertiary);
}

.newest-stats {
    text-align: right;
    flex-shrink: 0;
}

.stat-up {
    font-size: 0.9rem;
    font-weight: 600;
    color: #10b981;
    margin-bottom: 4px;
}

.stat-date {
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

/* ========================================
   Why Section
   ======================================== */
.why-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.why-card {
    padding: 32px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-sm);
}

.why-card:hover {
    background: var(--bg-card);
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.why-icon {
    font-size: 2rem;
    margin-bottom: 16px;
}

.why-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.why-card p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========================================
   CTA Section
   ======================================== */
.section-cta {
    padding: 80px 0 100px;
}

.cta-box {
    position: relative;
    padding: 80px 60px;
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.06) 0%, rgba(139, 92, 246, 0.06) 100%);
    border: 1px solid rgba(6, 182, 212, 0.15);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    text-align: center;
    box-shadow: var(--shadow-md);
}

.cta-bg-shapes {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.cta-shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.4;
}

.cta-shape-1 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.25) 0%, transparent 70%);
    top: -100px;
    right: -50px;
}

.cta-shape-2 {
    width: 250px;
    height: 250px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.25) 0%, transparent 70%);
    bottom: -80px;
    left: -50px;
}

.cta-shape-3 {
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(219, 39, 119, 0.15) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta-title {
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.cta-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 36px;
}

.cta-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

.btn-cta-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 32px;
    background: var(--gradient-primary);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: var(--transition-bounce);
    box-shadow: var(--shadow-md), 0 8px 24px rgba(6, 182, 212, 0.25);
}

.btn-cta-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg), 0 12px 32px rgba(6, 182, 212, 0.3);
}

.btn-cta-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 32px;
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.btn-cta-secondary:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-hover);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    padding: 80px 0 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 2fr;
    gap: 48px;
    padding-bottom: 60px;
}

.footer-logo {
    margin-bottom: 16px;
}

.footer-tagline {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.footer-socials {
    display: flex;
    gap: 12px;
}

.social-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.social-btn:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-hover);
    color: var(--accent-cyan);
    transform: translateY(-2px);
}

.footer-links-group h4,
.footer-newsletter h4 {
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    font-size: 0.88rem;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--accent-cyan);
}

.footer-newsletter p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.newsletter-form {
    display: flex;
    gap: 8px;
}

.newsletter-input {
    flex: 1;
    padding: 12px 16px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.88rem;
    outline: none;
    transition: var(--transition-fast);
}

.newsletter-input:focus {
    border-color: var(--accent-cyan);
    background: var(--bg-card);
}

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

.btn-subscribe {
    padding: 12px 20px;
    background: var(--gradient-primary);
    color: white;
    font-size: 0.88rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.btn-subscribe:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.footer-bottom {
    padding: 24px 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.82rem;
    color: var(--text-tertiary);
}

.footer-bottom a {
    color: var(--text-secondary);
}

.footer-bottom a:hover {
    color: var(--accent-cyan);
}

/* ========================================
   Utility Classes
   ======================================== */
.hidden {
    display: none !important;
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1200px) {
    .category-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    .tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .why-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr 1fr;
        gap: 32px;
    }
    .footer-brand {
        grid-column: 1 / -1;
    }
    .footer-newsletter {
        grid-column: 1 / -1;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .nav-mobile-toggle {
        display: flex;
    }
    .search-box {
        display: none;
    }
    .hero {
        padding: 120px 20px 60px;
    }
    .hero-title {
        font-size: 2rem;
    }
    .hero-desc {
        font-size: 1rem;
    }
    .hero-actions {
        flex-direction: column;
        gap: 12px;
    }
    .hero-stats {
        flex-wrap: wrap;
        gap: 24px;
    }
    .stat-divider {
        display: none;
    }
    .category-grid {
        grid-template-columns: repeat(2, 1fr);
        margin-top: -30px;
    }
    .tools-grid,
    .category-showcase-grid {
        grid-template-columns: 1fr;
    }
    .why-grid {
        grid-template-columns: 1fr;
    }
    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }
    .newest-item {
        flex-wrap: wrap;
        gap: 12px;
    }
    .newest-stats {
        text-align: left;
        display: flex;
        gap: 16px;
    }
    .cta-box {
        padding: 50px 24px;
    }
    .cta-title {
        font-size: 1.6rem;
    }
    .cta-actions {
        flex-direction: column;
        gap: 12px;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    .category-tabs {
        gap: 6px;
    }
    .cat-tab {
        padding: 8px 14px;
        font-size: 0.82rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    .category-grid {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
    .newsletter-form {
        flex-direction: column;
    }
    .hero-stats {
        display: grid;
        grid-template-columns: 1fr 1fr;
    }
}

/* ========================================
   Page: Category Page (category.html)
   ======================================== */
.page-header {
    padding: 140px 0 60px;
    text-align: center;
    position: relative;
}

.page-header-bg {
    position: absolute;
    inset: 0;
    background: var(--gradient-hero);
    z-index: -1;
}

.page-header-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(circle at 1px 1px, rgba(0, 0, 0, 0.02) 1px, transparent 0);
    background-size: 40px 40px;
}

.page-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.page-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.filter-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.filter-select {
    padding: 10px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.88rem;
    cursor: pointer;
    outline: none;
    transition: var(--transition-fast);
}

.filter-select:focus {
    border-color: var(--accent-cyan);
}

.filter-btn {
    padding: 10px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.88rem;
    font-weight: 500;
    transition: var(--transition-fast);
}

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

/* ========================================
   Page: Tool Detail (tool-detail.html)
   ======================================== */
.tool-detail-header {
    padding: 140px 0 60px;
}

.tool-detail-hero {
    display: flex;
    align-items: flex-start;
    gap: 32px;
    padding: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-2xl);
    margin-bottom: 40px;
    box-shadow: var(--shadow-md);
}

.tool-detail-logo {
    width: 88px;
    height: 88px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    font-weight: 800;
    color: white;
    flex-shrink: 0;
    box-shadow: var(--shadow-md);
}

.tool-detail-info {
    flex: 1;
}

.tool-detail-name {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.tool-detail-desc {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.tool-detail-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.tool-detail-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.btn-visit-tool {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    background: var(--gradient-primary);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: var(--transition-bounce);
    box-shadow: var(--shadow-sm), 0 4px 12px rgba(6, 182, 212, 0.2);
}

.btn-visit-tool:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md), 0 8px 20px rgba(6, 182, 212, 0.3);
}

.btn-save-tool {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.btn-save-tool:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.tool-detail-stats {
    display: flex;
    gap: 32px;
    flex-shrink: 0;
}

.detail-stat {
    text-align: center;
}

.detail-stat-value {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.detail-stat-label {
    font-size: 0.78rem;
    color: var(--text-tertiary);
}

.tool-content-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 32px;
}

.content-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 32px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
}

.content-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.content-card p,
.content-card li {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.content-card ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.content-card li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.content-card li::before {
    content: '✓';
    color: var(--accent-cyan);
    font-weight: 700;
    flex-shrink: 0;
}

.sidebar-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
}

.sidebar-card h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.sidebar-info-row {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.85rem;
}

.sidebar-info-row:last-child {
    border-bottom: none;
}

.sidebar-info-label {
    color: var(--text-tertiary);
}

.sidebar-info-value {
    color: var(--text-primary);
    font-weight: 500;
}

/* ========================================
   Page: Submit (submit.html)
   ======================================== */
.submit-form {
    max-width: 720px;
    margin: 0 auto;
}

.form-section {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 32px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
}

.form-section h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.88rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.form-group label span {
    color: #ef4444;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.92rem;
    font-family: inherit;
    outline: none;
    transition: var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.1);
    background: var(--bg-card);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-tertiary);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-hint {
    font-size: 0.78rem;
    color: var(--text-tertiary);
    margin-top: 6px;
}

.btn-submit {
    width: 100%;
    padding: 16px;
    background: var(--gradient-primary);
    color: white;
    font-size: 1rem;
    font-weight: 700;
    border-radius: var(--radius-lg);
    transition: var(--transition-bounce);
    box-shadow: var(--shadow-md), 0 4px 16px rgba(6, 182, 212, 0.2);
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 8px 24px rgba(6, 182, 212, 0.3);
}

/* ========================================
   Page: About (about.html)
   ======================================== */
.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-intro {
    text-align: center;
    padding: 60px 0;
}

.about-intro p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin: 40px 0;
}

.team-card {
    text-align: center;
    padding: 32px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-sm);
}

.team-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-lg);
}

.team-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin: 0 auto 16px;
}

.team-name {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.team-role {
    font-size: 0.85rem;
    color: var(--accent-cyan);
    margin-bottom: 12px;
}

.team-bio {
    font-size: 0.82rem;
    color: var(--text-tertiary);
    line-height: 1.6;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 20px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.contact-item:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-hover);
}

.contact-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: 1.2rem;
}

.contact-info {
    flex: 1;
}

.contact-label {
    font-size: 0.78rem;
    color: var(--text-tertiary);
}

.contact-value {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
}

/* ========================================
   Page: Tools List (tools.html)
   ======================================== */
.tools-filter-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.sort-select {
    padding: 10px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.88rem;
    cursor: pointer;
    outline: none;
}

.view-toggle {
    display: flex;
    gap: 4px;
    margin-left: auto;
}

.view-btn {
    padding: 8px 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-tertiary);
    font-size: 0.85rem;
    transition: var(--transition-fast);
}

.view-btn.active,
.view-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 48px;
}

.page-btn {
    min-width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.88rem;
    font-weight: 500;
    transition: var(--transition-fast);
}

.page-btn:hover,
.page-btn.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
}

.page-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ========================================
   Scrollbar
   ======================================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-hover);
}

/* ========================================
   Mobile Navigation Overlay
   ======================================== */
.mobile-nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(255, 255, 255, 0.98);
    z-index: 999;
    padding: 100px 24px 40px;
    flex-direction: column;
    gap: 8px;
}

.mobile-nav-overlay.open {
    display: flex;
}

.mobile-nav-overlay .nav-link {
    padding: 14px 16px;
    font-size: 1rem;
    border-radius: var(--radius-md);
    color: var(--text-primary);
}

.mobile-nav-overlay .nav-link:hover {
    background: var(--bg-tertiary);
}

/* ========================================
   Selection
   ======================================== */
::selection {
    background: rgba(6, 182, 212, 0.2);
    color: var(--text-primary);
}