/* Zapon - Indian Calculation Toolbox */
/* Modern, Sophisticated Design System */

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #a855f7;
    --accent: #fbbf24;
    --dark: #0f172a;
    --dark-light: #1e293b;
    --gray: #64748b;
    --gray-light: #94a3b8;
    --light: #f8fafc;
    --white: #ffffff;
    --gradient-1: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
    --gradient-2: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0,0,0,0.1);
    --shadow-xl: 0 25px 50px -12px rgba(0,0,0,0.25);
    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--light);
    color: var(--dark);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
}

.logo-icon {
    width: 45px;
    height: 45px;
}

.logo-text {
    font-size: 1.75rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-link {
    text-decoration: none;
    color: var(--gray);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s;
    position: relative;
}

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

.nav-link:focus-visible,
.search-btn:focus-visible,
.tag-btn:focus-visible,
.mobile-menu-btn:focus-visible,
.cta-btn:focus-visible,
.tool-card:focus-visible,
.social-links a:focus-visible,
.footer-links a:focus-visible,
.filter-dropdown:focus-visible,
.search-box input:focus-visible {
    outline: 3px solid rgba(99, 102, 241, 0.45);
    outline-offset: 2px;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-1);
    transition: width 0.3s;
}

.nav-link:hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--dark);
    cursor: pointer;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 8rem 2rem 6rem;
    overflow: hidden;
}

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

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: float 20s infinite ease-in-out;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: var(--primary);
    top: -200px;
    right: -200px;
    animation-delay: 0s;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: var(--secondary);
    bottom: -150px;
    left: -150px;
    animation-delay: -5s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: var(--accent);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.3;
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(99,102,241,0.1);
    border: 1px solid rgba(99,102,241,0.2);
    padding: 0.5rem 1.25rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--primary);
    margin-bottom: 2rem;
    animation: fadeInUp 0.6s ease;
}

.hero-badge i {
    color: var(--accent);
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.6s ease 0.1s both;
}

.gradient-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.6s ease 0.2s both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Search Container */
.search-container {
    max-width: 700px;
    margin: 0 auto 3rem;
    animation: fadeInUp 0.6s ease 0.3s both;
}

.search-box {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(0,0,0,0.05);
}

.search-icon {
    color: var(--gray-light);
    font-size: 1.25rem;
    margin-left: 1rem;
}

.search-box input {
    flex: 1;
    border: none;
    padding: 1rem;
    font-size: 1rem;
    font-family: inherit;
    outline: none;
    background: transparent;
}

.search-box input::placeholder {
    color: var(--gray-light);
}

.search-filters {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding-right: 0.5rem;
    border-left: 1px solid rgba(0,0,0,0.1);
}

.filter-dropdown {
    border: none;
    padding: 0.75rem 1rem;
    font-family: inherit;
    font-size: 0.9rem;
    color: var(--gray);
    background: transparent;
    cursor: pointer;
    outline: none;
}

.search-btn {
    background: var(--gradient-1);
    color: var(--white);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.25rem;
    transition: transform 0.3s, box-shadow 0.3s;
}

.search-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 20px rgba(99,102,241,0.3);
}

.search-tags {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

.tag {
    color: var(--gray);
    font-size: 0.875rem;
}

.tag-btn {
    background: rgba(99,102,241,0.1);
    border: none;
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--primary);
    cursor: pointer;
    transition: all 0.3s;
}

.tag-btn:hover {
    background: var(--primary);
    color: var(--white);
}

/* Hero Stats */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 4rem;
    animation: fadeInUp 0.6s ease 0.4s both;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--gray);
    font-size: 0.9rem;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 0.75rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--gray);
    font-size: 0.8rem;
    animation: bounce 2s infinite;
}

.mouse {
    width: 25px;
    height: 40px;
    border: 2px solid var(--gray-light);
    border-radius: 12px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--gray-light);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

@keyframes scroll {
    0% { opacity: 1; top: 8px; }
    100% { opacity: 0; top: 20px; }
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Section Styles */
section {
    padding: 6rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-badge {
    display: inline-block;
    background: rgba(99,102,241,0.1);
    color: var(--primary);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--dark);
}

.section-subtitle {
    color: var(--gray);
    font-size: 1.1rem;
}

/* Tools Grid */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

.tool-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-decoration: none;
    color: inherit;
    position: relative;
    transition: all 0.3s ease;
    border: 1px solid rgba(0,0,0,0.05);
    display: flex;
    flex-direction: column;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(99,102,241,0.2);
}

.tool-card.featured {
    border: 2px solid var(--primary);
}

.tool-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--accent);
    color: var(--dark);
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
}

.tool-icon-wrapper {
    width: 60px;
    height: 60px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.tool-icon-wrapper i {
    font-size: 1.5rem;
    color: var(--white);
}

.tool-name {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--dark);
}

.tool-desc {
    color: var(--gray);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    flex: 1;
}

.tool-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
}

.tool-category {
    background: rgba(99,102,241,0.1);
    color: var(--primary);
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
}

.tool-users {
    color: var(--gray);
    font-size: 0.8rem;
}

.tool-users i {
    margin-right: 0.25rem;
}

.tool-arrow {
    position: absolute;
    bottom: 2rem;
    right: 2rem;
    width: 40px;
    height: 40px;
    background: var(--gradient-1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.3s;
}

.tool-card:hover .tool-arrow {
    opacity: 1;
    transform: translateX(0);
}

.coming-soon {
    opacity: 0.7;
}

.coming-soon:hover {
    opacity: 1;
}

.coming-badge {
    background: var(--gray-light);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
}

.no-results {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--gray);
}

.no-results i {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* Categories Section */
.categories-section {
    background: var(--white);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 2rem;
}

.category-card {
    background: var(--light);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    border: 2px solid transparent;
}

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

.category-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.category-icon i {
    font-size: 1.75rem;
    color: var(--white);
}

.category-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.category-card p {
    color: var(--gray);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.category-count {
    background: rgba(99,102,241,0.1);
    color: var(--primary);
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* Features Section */
.features-section {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    text-align: center;
    transition: all 0.3s;
}

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

.feature-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.feature-icon i {
    font-size: 1.75rem;
    color: var(--white);
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.feature-card p {
    color: var(--gray);
}

/* CTA Section */
.cta-section {
    background: var(--gradient-1);
    padding: 5rem 0;
    text-align: center;
}

.cta-content h2 {
    color: var(--white);
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-content p {
    color: rgba(255,255,255,0.9);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--white);
    color: var(--primary);
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    box-shadow: var(--shadow-lg);
}

.cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
}

/* Footer */
.footer {
    background: var(--dark);
    color: var(--white);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1.5fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--white);
    margin-bottom: 1rem;
}

.footer-logo svg {
    width: 40px;
    height: 40px;
}

.footer-logo span {
    font-size: 1.5rem;
    font-weight: 700;
}

.footer-desc {
    color: var(--gray-light);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    text-decoration: none;
    transition: all 0.3s;
}

.social-links a:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

.footer-links h4 {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
}

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

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--gray-light);
    text-decoration: none;
    transition: color 0.3s;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 2rem;
    text-align: center;
    color: var(--gray-light);
}

.footer-bottom i {
    color: #ef4444;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 3.5rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .nav-links.active {
        display: flex;
        position: absolute;
        top: calc(100% + 8px);
        right: 1rem;
        flex-direction: column;
        min-width: 220px;
        background: var(--white);
        border: 1px solid rgba(0,0,0,0.08);
        border-radius: var(--radius);
        padding: 0.75rem;
        box-shadow: var(--shadow-xl);
        gap: 0.25rem;
        z-index: 1001;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-stats {
        gap: 2rem;
    }
    
    .stat-number {
        font-size: 1.75rem;
    }
    
    .search-box {
        flex-wrap: wrap;
    }
    
    .search-filters {
        width: 100%;
        border-left: none;
        border-top: 1px solid rgba(0,0,0,0.1);
        padding: 0.5rem 0;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .categories-grid,
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 7rem 1rem 3rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .container {
        padding: 0 1rem;
    }
}