:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #8b5cf6;
    --secondary-dark: #7c3aed;
    --accent: #ec4899;
    --accent-dark: #db2777;
    --dark: #0f172a;
    --dark-light: #1e293b;
    --dark-lighter: #334155;
    --light: #f8fafc;
    --white: #ffffff;
    --gradient-primary: linear-gradient(135deg, var(--primary), var(--secondary));
    --gradient-accent: linear-gradient(135deg, var(--accent), var(--secondary));
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 60px rgba(99, 102, 241, 0.3);
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-2xl: 64px;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background: var(--dark);
    color: var(--light);
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
ul { list-style: none; }

::selection { background: var(--primary); color: var(--white); }
::-moz-selection { background: var(--primary); color: var(--white); }

::-webkit-scrollbar { width: 12px; height: 12px; }
::-webkit-scrollbar-track { background: var(--dark); }
::-webkit-scrollbar-thumb { background: var(--gradient-primary); border-radius: 10px; border: 2px solid var(--dark); }
::-webkit-scrollbar-thumb:hover { background: var(--gradient-accent); }

.scroll-indicator {
    position: fixed; top: 0; left: 0; width: 0%; height: 4px;
    background: var(--gradient-primary); z-index: 10000;
    transition: width 0.3s ease; box-shadow: 0 0 10px rgba(99, 102, 241, 0.5);
}

.background {
    position: fixed; width: 100%; height: 100%; top: 0; left: 0; z-index: 0;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    overflow: hidden;
}

.background::before {
    content: ''; position: absolute; width: 100%; height: 100%;
    background: radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(236, 72, 153, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 40% 20%, rgba(139, 92, 246, 0.15) 0%, transparent 50%);
    animation: backgroundMove 20s ease infinite;
}

@keyframes backgroundMove {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-30px, -30px) scale(1.05); }
}

.gradient-overlay {
    position: absolute; width: 100%; height: 100%;
    background: radial-gradient(circle at center, transparent 0%, rgba(15, 23, 42, 0.3) 100%);
}

.particle {
    position: absolute; border-radius: 50%; pointer-events: none;
    opacity: 0.6; animation: float 15s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) translateX(0); }
    25% { transform: translateY(-20px) translateX(10px); }
    50% { transform: translateY(-10px) translateX(-10px); }
    75% { transform: translateY(-30px) translateX(5px); }
}

.navbar {
    position: fixed; top: 0; width: 100%; z-index: 1000;
    backdrop-filter: blur(20px); background: rgba(15, 23, 42, 0.85);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-normal);
}

.navbar.scrolled { background: rgba(15, 23, 42, 0.95); box-shadow: var(--shadow-md); }

.nav-container {
    max-width: 1400px; margin: 0 auto; padding: var(--spacing-sm) var(--spacing-xl);
    display: flex; justify-content: space-between; align-items: center;
}

.nav-logo {
    display: flex; align-items: center; gap: 12px; font-size: 1.5rem;
    font-weight: 900; transition: transform var(--transition-normal);
}

.nav-logo:hover { transform: scale(1.05); }

.logo-icon { font-size: 2rem; filter: drop-shadow(0 4px 8px rgba(99, 102, 241, 0.4)); }

.logo-text {
    background: var(--gradient-primary); -webkit-background-clip: text;
    -webkit-text-fill-color: transparent; background-clip: text; letter-spacing: -1px;
}

.nav-links { display: flex; gap: var(--spacing-lg); list-style: none; }

.nav-link {
    color: var(--light); font-weight: 500; font-size: 1rem;
    position: relative; padding: 8px 0; transition: color var(--transition-normal);
}

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

.nav-link:hover { color: var(--primary-light); }
.nav-link:hover::after { width: 100%; }

.mobile-menu-btn {
    display: none; flex-direction: column; gap: 5px;
    background: rgba(255, 255, 255, 0.1); padding: 10px;
    border-radius: var(--radius-sm); transition: all var(--transition-normal);
}

.mobile-menu-btn:hover { background: rgba(255, 255, 255, 0.15); }

.hamburger {
    width: 24px; height: 2px; background: var(--light);
    border-radius: 2px; transition: all var(--transition-normal);
}

.mobile-menu-btn.active .hamburger:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.mobile-menu-btn.active .hamburger:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active .hamburger:nth-child(3) { transform: rotate(-45deg) translate(7px, -6px); }

.main-content { position: relative; z-index: 1; max-width: 1400px; margin: 0 auto; padding: 0 var(--spacing-xl); }

.hero {
    min-height: 100vh; display: flex; flex-direction: column;
    justify-content: center; align-items: center; text-align: center;
    padding: 120px 0 80px; position: relative;
}

.hero-content { animation: fadeInUp 1s ease; }

.hero-badge {
    display: inline-block; padding: 10px 24px;
    background: rgba(99, 102, 241, 0.1); border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 50px; color: var(--primary-light); font-size: 0.9rem;
    font-weight: 600; margin-bottom: var(--spacing-md);
    animation: fadeInDown 1s ease 0.2s both;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 5rem); font-weight: 900;
    margin-bottom: var(--spacing-md); line-height: 1.1; letter-spacing: -2px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--white) 0%, var(--primary-light) 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.3rem); color: rgba(255, 255, 255, 0.7);
    max-width: 700px; margin: 0 auto var(--spacing-xl); line-height: 1.8;
}

.hero-buttons {
    display: flex; gap: var(--spacing-sm); justify-content: center;
    flex-wrap: wrap; margin-bottom: var(--spacing-2xl);
}

.btn {
    display: inline-flex; align-items: center; gap: 10px; padding: 14px 32px;
    border-radius: var(--radius-md); font-weight: 600; font-size: 1rem;
    transition: all var(--transition-normal); position: relative; overflow: hidden;
}

.btn::before {
    content: ''; position: absolute; top: 50%; left: 50%; width: 0; height: 0;
    border-radius: 50%; background: rgba(255, 255, 255, 0.1);
    transform: translate(-50%, -50%); transition: width 0.5s, height 0.5s;
}

.btn:hover::before { width: 300px; height: 300px; }

.btn-primary {
    background: var(--gradient-primary); color: var(--white);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 35px rgba(99, 102, 241, 0.6); }

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

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15); border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-3px);
}

.btn-lg { padding: 16px 40px; font-size: 1.1rem; }
.btn svg { transition: transform var(--transition-normal); }
.btn:hover svg { transform: translateX(5px); }

.hero-stats {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-lg); max-width: 900px; margin: 0 auto;
}

.stat-item {
    text-align: center; padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.03); border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1); transition: all var(--transition-normal);
}

.stat-item:hover {
    background: rgba(255, 255, 255, 0.05); border-color: rgba(99, 102, 241, 0.3);
    transform: translateY(-5px);
}

.stat-number {
    font-size: 2.5rem; font-weight: 900; background: var(--gradient-primary);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text; margin-bottom: 8px;
}

.stat-label {
    color: rgba(255, 255, 255, 0.6); font-size: 0.85rem;
    text-transform: uppercase; letter-spacing: 1px; font-weight: 600;
}

.floating-elements {
    position: absolute; width: 100%; height: 100%; top: 0; left: 0;
    pointer-events: none; z-index: -1;
}

.float-element {
    position: absolute; font-size: 3rem; opacity: 0.1;
    animation: floatAround 20s ease-in-out infinite; filter: blur(1px);
}

@keyframes floatAround {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(20px, -20px) rotate(90deg); }
    50% { transform: translate(-20px, 20px) rotate(180deg); }
    75% { transform: translate(20px, 20px) rotate(270deg); }
}

.tools-section, .features-section, .about-section { padding: var(--spacing-2xl) 0; }

.section-header { text-align: center; margin-bottom: var(--spacing-2xl); }

.section-title {
    font-size: clamp(2rem, 5vw, 3rem); font-weight: 800;
    margin-bottom: var(--spacing-sm); display: flex;
    align-items: center; justify-content: center; gap: 16px;
}

.title-icon { font-size: 2.5rem; filter: drop-shadow(0 4px 8px rgba(99, 102, 241, 0.4)); }

.section-subtitle {
    font-size: 1.2rem; color: rgba(255, 255, 255, 0.6);
    max-width: 600px; margin: 0 auto;
}

.tools-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.tool-card {
    background: rgba(255, 255, 255, 0.03); backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1); border-radius: var(--radius-xl);
    padding: var(--spacing-xl); transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative; overflow: hidden; cursor: pointer;
}

.tool-card::before {
    content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.1));
    opacity: 0; transition: opacity 0.4s;
}

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

.tool-card:hover {
    transform: translateY(-10px); border-color: rgba(99, 102, 241, 0.5);
    box-shadow: 0 20px 60px rgba(99, 102, 241, 0.3);
}

.tool-card-inner { position: relative; z-index: 1; }

.tool-icon-wrapper { margin-bottom: var(--spacing-md); }

.tool-icon {
    width: 80px; height: 80px; border-radius: var(--radius-lg);
    display: flex; align-items: center; justify-content: center;
    font-size: 2.5rem; transition: transform var(--transition-normal);
    box-shadow: var(--shadow-lg);
}

.tool-icon.gradient-1 { background: linear-gradient(135deg, #6366f1, #8b5cf6); }
.tool-icon.gradient-2 { background: linear-gradient(135deg, #8b5cf6, #ec4899); }
.tool-icon.gradient-3 { background: linear-gradient(135deg, #ec4899, #f59e0b); }
.tool-icon.gradient-4 { background: linear-gradient(135deg, #f59e0b, #ef4444); }

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

.tool-title { font-size: 1.6rem; font-weight: 700; margin-bottom: 8px; color: var(--white); }

.tool-category {
    font-size: 0.85rem; color: rgba(255, 255, 255, 0.5);
    text-transform: uppercase; letter-spacing: 1px;
    margin-bottom: var(--spacing-md); font-weight: 600;
}

.tool-description { color: rgba(255, 255, 255, 0.7); margin-bottom: var(--spacing-md); line-height: 1.7; }

.tool-features { list-style: none; margin-bottom: var(--spacing-md); }

.tool-features li {
    display: flex; align-items: center; gap: 12px; padding: 10px 0;
    color: rgba(255, 255, 255, 0.7); font-size: 0.95rem;
}

.check-icon { width: 20px; height: 20px; color: var(--primary-light); flex-shrink: 0; }

.tool-footer {
    display: flex; justify-content: space-between; align-items: center;
    margin-top: var(--spacing-md); padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

.tag {
    padding: 6px 12px; background: rgba(255, 255, 255, 0.1);
    border-radius: 20px; font-size: 0.75rem; font-weight: 600;
    color: rgba(255, 255, 255, 0.8);
}

.tool-btn {
    display: inline-flex; align-items: center; gap: 8px; padding: 12px 24px;
    background: var(--gradient-primary); color: var(--white);
    border-radius: var(--radius-md); font-weight: 600; font-size: 0.95rem;
    transition: all var(--transition-normal); box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.tool-btn:hover { transform: translateX(5px); box-shadow: 0 6px 25px rgba(99, 102, 241, 0.6); }

.features-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    text-align: center; padding: var(--spacing-xl);
    background: rgba(255, 255, 255, 0.03); border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl); transition: all var(--transition-normal);
}

.feature-card:hover {
    background: rgba(255, 255, 255, 0.05); border-color: rgba(99, 102, 241, 0.3);
    transform: translateY(-10px);
}

.feature-icon {
    font-size: 3rem; margin-bottom: var(--spacing-md);
    filter: drop-shadow(0 4px 8px rgba(99, 102, 241, 0.4));
}

.feature-card h3 {
    font-size: 1.4rem; font-weight: 700;
    margin-bottom: var(--spacing-sm); color: var(--white);
}

.feature-card p { color: rgba(255, 255, 255, 0.7); line-height: 1.7; }

.about-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.about-card {
    padding: var(--spacing-xl); background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1); border-radius: var(--radius-xl);
    transition: all var(--transition-normal);
}

.about-card:hover {
    background: rgba(255, 255, 255, 0.05); border-color: rgba(99, 102, 241, 0.3);
    transform: translateY(-10px);
}

.about-icon {
    width: 80px; height: 80px; border-radius: var(--radius-lg);
    display: flex; align-items: center; justify-content: center;
    font-size: 2.5rem; margin-bottom: var(--spacing-md); box-shadow: var(--shadow-lg);
}

.about-card h3 {
    font-size: 1.5rem; font-weight: 700;
    margin-bottom: var(--spacing-sm); color: var(--white);
}

.about-card p { color: rgba(255, 255, 255, 0.7); line-height: 1.7; }

.cta-section {
    text-align: center; padding: var(--spacing-2xl);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.1));
    border-radius: var(--radius-xl); border: 1px solid rgba(255, 255, 255, 0.1);
    margin: var(--spacing-2xl) 0;
}

.cta-content h2 { font-size: clamp(2rem, 5vw, 3rem); font-weight: 900; margin-bottom: var(--spacing-sm); }

.cta-content p {
    font-size: 1.2rem; color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--spacing-xl); max-width: 700px;
    margin-left: auto; margin-right: auto;
}

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

.footer {
    position: relative; z-index: 1; padding: var(--spacing-2xl) var(--spacing-xl) var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1); margin-top: var(--spacing-2xl);
}

.footer-content {
    max-width: 1400px; margin: 0 auto;
    display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl); margin-bottom: var(--spacing-xl);
}

.footer-column h3 {
    font-size: 1.2rem; font-weight: 700;
    margin-bottom: var(--spacing-md); color: var(--white);
}

.footer-logo {
    display: flex; align-items: center; gap: 12px;
    margin-bottom: var(--spacing-md); font-size: 1.5rem; font-weight: 900;
}

.footer-desc { color: rgba(255, 255, 255, 0.6); line-height: 1.7; margin-bottom: var(--spacing-md); }

.footer-links { list-style: none; }
.footer-links li { margin-bottom: 12px; }

.footer-links a {
    color: rgba(255, 255, 255, 0.6); transition: color var(--transition-normal);
    display: inline-block;
}

.footer-links a:hover { color: var(--primary-light); transform: translateX(5px); }

.footer-bottom {
    text-align: center; padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1); color: rgba(255, 255, 255, 0.5);
}

.back-to-top {
    position: fixed; bottom: 30px; right: 30px; width: 50px; height: 50px;
    background: var(--gradient-primary); color: var(--white);
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    cursor: pointer; opacity: 0; visibility: hidden;
    transition: all var(--transition-normal); z-index: 999; box-shadow: var(--shadow-lg);
}

.back-to-top.show { opacity: 1; visibility: visible; }
.back-to-top:hover { transform: translateY(-5px); box-shadow: var(--shadow-xl); }
.back-to-top svg { width: 24px; height: 24px; }

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

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

@media (max-width: 1024px) {
    .nav-container { padding: var(--spacing-sm) var(--spacing-md); }
    .main-content { padding: 0 var(--spacing-md); }
    .hero-title { font-size: clamp(2rem, 6vw, 4rem); }
    .tools-grid { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
}

@media (max-width: 768px) {
    .nav-links {
        display: none; position: absolute; top: 100%; left: 0; right: 0;
        background: rgba(15, 23, 42, 0.98); flex-direction: column;
        padding: var(--spacing-md); border-radius: 0 0 var(--radius-lg) var(--radius-lg);
        backdrop-filter: blur(20px); border: 1px solid rgba(255, 255, 255, 0.1);
        border-top: none; box-shadow: var(--shadow-lg);
    }
    .nav-links.active { display: flex; animation: fadeInDown 0.3s ease; }
    .nav-link { padding: var(--spacing-sm) 0; text-align: center; }
    .mobile-menu-btn { display: flex; }
    .hero { padding: 100px 0 60px; min-height: auto; }
    .hero-buttons { flex-direction: column; width: 100%; max-width: 300px; margin-left: auto; margin-right: auto; }
    .btn { width: 100%; justify-content: center; }
    .hero-stats { grid-template-columns: repeat(2, 1fr); gap: var(--spacing-md); }
    .tools-grid { grid-template-columns: 1fr; }
    .features-grid { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
    .about-grid { grid-template-columns: 1fr; }
    .cta-section { padding: var(--spacing-xl) var(--spacing-md); }
    .cta-buttons { flex-direction: column; width: 100%; max-width: 300px; margin-left: auto; margin-right: auto; }
    .footer-content { grid-template-columns: 1fr; text-align: center; }
    .footer-logo { justify-content: center; }
    .back-to-top { bottom: 20px; right: 20px; width: 45px; height: 45px; }
}

@media (max-width: 480px) {
    :root { font-size: 14px; }
    .nav-container, .main-content { padding: var(--spacing-sm); }
    .hero-badge { font-size: 0.8rem; padding: 8px 16px; }
    .hero-title { font-size: clamp(1.8rem, 8vw, 2.5rem); letter-spacing: -1px; }
    .hero-description { font-size: 1rem; }
    .hero-stats { grid-template-columns: 1fr; }
    .stat-number { font-size: 2rem; }
    .section-title { font-size: clamp(1.5rem, 6vw, 2rem); flex-direction: column; gap: 8px; }
    .title-icon { font-size: 2rem; }
    .section-subtitle { font-size: 1rem; }
    .tool-card { padding: var(--spacing-md); }
    .tool-icon { width: 60px; height: 60px; font-size: 2rem; }
    .tool-title { font-size: 1.3rem; }
    .tool-footer { flex-direction: column; gap: var(--spacing-sm); align-items: flex-start; }
    .tool-btn { width: 100%; justify-content: center; }
    .feature-card, .about-card { padding: var(--spacing-md); }
    .feature-icon, .about-icon { font-size: 2.5rem; }
    .cta-content h2 { font-size: clamp(1.5rem, 6vw, 2rem); }
    .cta-content p { font-size: 1rem; }
    .footer { padding: var(--spacing-xl) var(--spacing-sm) var(--spacing-md); }
    .back-to-top { width: 40px; height: 40px; bottom: 15px; right: 15px; }
    .back-to-top svg { width: 20px; height: 20px; }
}

@media (max-width: 360px) {
    .hero-title { font-size: 1.6rem; }
    .btn { padding: 12px 24px; font-size: 0.9rem; }
    .tool-card { padding: var(--spacing-sm); }
}

.hidden { display: none !important; }
.visible { display: block !important; }

:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

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