/* ===========================
   CSS RESET & BASE STYLES
   =========================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette - LIGHT MODERN THEME */
    --primary-gradient: linear-gradient(135deg, #4F46E5 0%, #7C3AED 100%);
    --secondary-gradient: linear-gradient(135deg, #EC4899 0%, #F43F5E 100%);
    --accent-gradient: linear-gradient(135deg, #0EA5E9 0%, #06B6D4 100%);
    --success-gradient: linear-gradient(135deg, #10B981 0%, #34D399 100%);
    
    /* Light Theme Colors */
    --bg-primary: #F8FAFC;
    --bg-secondary: #FFFFFF;
    --bg-tertiary: #F1F5F9;
    --bg-card: rgba(255, 255, 255, 0.85); /* Highly transparent white */
    --bg-card-hover: rgba(255, 255, 255, 0.95);
    
    /* Text Colors */
    --text-primary: #1E293B;  /* Slate 800 */
    --text-secondary: #475569; /* Slate 600 */
    --text-muted: #94A3B8;    /* Slate 400 */
    
    /* Accent Colors */
    --accent-purple: #667eea;
    --accent-pink: #f093fb;
    --accent-blue: #0EA5E9;
    --accent-green: #10B981;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    
    /* Shadows - Soft & Modern */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.02);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 10px 10px -5px rgba(0, 0, 0, 0.02);
    --shadow-glow: 0 0 25px rgba(124, 58, 237, 0.15);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s ease;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* ===========================
   BACKGROUND EFFECTS (LIGHT MODE)
   =========================== */
.bg-gradient {
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 20% 50%, rgba(79, 70, 229, 0.05) 0%, transparent 40%),
                radial-gradient(circle at 80% 80%, rgba(236, 72, 153, 0.05) 0%, transparent 40%),
                radial-gradient(circle at 40% 10%, rgba(14, 165, 233, 0.05) 0%, transparent 40%);
    animation: gradientShift 25s ease infinite;
    z-index: -2;
}

@keyframes gradientShift {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(3%, 3%) rotate(10deg); }
    66% { transform: translate(-3%, 2%) rotate(-5deg); }
}

.bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(203, 213, 225, 0.4) 1px, transparent 1px),
        linear-gradient(90deg, rgba(203, 213, 225, 0.4) 1px, transparent 1px);
    background-size: 60px 60px;
    opacity: 0.5;
    z-index: -1;
}

/* ===========================
   CONTAINER & LAYOUT
   =========================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===========================
   HEADER
   =========================== */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.03);
    padding: var(--spacing-sm) 0;
    transition: all var(--transition-normal);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
}

.logo-icon {
    width: 42px;
    height: 42px;
    transition: transform var(--transition-normal);
}

.logo:hover .logo-icon {
    transform: scale(1.05) rotate(3deg);
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    transition: color var(--transition-fast);
}

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

/* ===========================
   HERO SECTION
   =========================== */
.hero {
    padding: 6rem 0 4rem 0;
    text-align: center;
    position: relative;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
    color: var(--text-primary);
    animation: fadeInUp 0.8s ease;
}

.gradient-text {
    display: inline-block;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.8s ease 0.4s backwards;
}

.hero-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
    animation: fadeInUp 0.8s ease 0.6s backwards;
}

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

.stat-number {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: var(--spacing-xs);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(0,0,0,0.1);
}

/* ===========================
   SEARCH & FILTER SECTION
   =========================== */
.search-section {
    padding: var(--spacing-xl) 0;
}

.search-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: center;
}

.search-box {
    position: relative;
    max-width: 500px;
    margin: 0 auto;
    width: 100%;
}

.search-icon {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--text-muted);
    pointer-events: none;
}

.search-input {
    width: 100%;
    padding: 1rem 1rem 1rem 3.5rem;
    background: white;
    border: 1px solid rgba(0,0,0,0.08);
    border-radius: 50px; /* Fully rounded */
    color: var(--text-primary);
    font-size: 1rem;
    font-family: var(--font-primary);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.search-input:focus {
    outline: none;
    border-color: #7C3AED;
    box-shadow: 0 0 0 4px rgba(124, 58, 237, 0.1);
}

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

.filter-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.6rem 1.25rem;
    background: white;
    border: 1px solid rgba(0,0,0,0.05);
    border-radius: 50px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.filter-btn:hover {
    color: var(--text-primary);
    border-color: rgba(0,0,0,0.1);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.filter-btn.active {
    background: var(--text-primary);
    border-color: var(--text-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

/* ===========================
   TOOLS GRID
   =========================== */
.tools-section {
    padding: 0 0 var(--spacing-2xl) 0;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.tool-card {
    background: white;
    border: 1px solid rgba(0,0,0,0.04);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    animation: fadeInUp 0.5s ease backwards;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(0,0,0,0.02);
}

.tool-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.tool-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    flex-shrink: 0;
    transition: transform var(--transition-normal);
}

.tool-card:hover .tool-icon {
    transform: scale(1.1) rotate(5deg);
    background: #EEF2FF;
}

.tool-info {
    flex: 1;
}

.tool-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 2px;
    color: var(--text-primary);
}

.tool-category {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: #6366F1; /* Indigo */
}

.tool-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
    font-size: 0.95rem;
}

.tool-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: var(--spacing-lg);
}

.feature-tag {
    padding: 0.25rem 0.75rem;
    background: #F1F5F9;
    border-radius: 4px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.tool-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(0,0,0,0.05);
}

.tool-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-green);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-green);
    box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.2);
}

.tool-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: #4F46E5;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: gap var(--transition-fast);
}

.tool-link:hover {
    gap: 0.6rem;
    text-decoration: underline;
}

.tool-link svg {
    width: 16px;
    height: 16px;
}

/* No Results */
.no-results {
    text-align: center;
    padding: var(--spacing-2xl) 0;
}

.no-results-icon {
    width: 64px;
    height: 64px;
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.no-results h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    color: var(--text-primary);
}

/* ===========================
   ABOUT SECTION
   =========================== */
.about-section {
    padding: var(--spacing-2xl) 0;
    background: white;
    border-top: 1px solid rgba(0,0,0,0.04);
}

.section-title {
    font-family: var(--font-display);
    font-size: 2.25rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.about-text {
    text-align: center;
    max-width: 650px;
    margin: 0 auto var(--spacing-xl) auto;
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.7;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.feature-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    transition: all var(--transition-normal);
}

.feature-card:hover {
    background: white;
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    display: block;
}

.feature-card h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* ===========================
   FOOTER
   =========================== */
.footer {
    padding: var(--spacing-2xl) 0 var(--spacing-lg) 0;
    background: white;
    border-top: 1px solid rgba(0,0,0,0.05);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.footer-description {
    color: var(--text-secondary);
    margin-top: var(--spacing-md);
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
    font-size: 0.95rem;
}

.footer-links a:hover {
    color: #4F46E5;
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(0,0,0,0.05);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ===========================
   ANIMATIONS
   =========================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===========================
   RESPONSIVE DESIGN
   =========================== */
@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .stat-divider {
        width: 40px;
        height: 1px;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .filter-buttons {
        gap: 0.5rem;
    }
    
    .filter-btn {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
}