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

:root {
    /* Dark Theme Color Palette */
    --primary-dark: #0a192f;
    --secondary-dark: #112240;
    --accent-dark: #1d2b53;
    --card-dark: #16213e;
    
    /* Accent Colors - Unique Combination */
    --accent-teal: #2afadf;
    --accent-purple: #8a2be2;
    --accent-pink: #ff2e63;
    --accent-amber: #ff9a3c;
    --accent-cyan: #00d4ff;
    --accent-lime: #7bf1a8;
    
    /* Text Colors */
    --text-primary: #e6f1ff;
    --text-secondary: #a8b2d1;
    --text-muted: #8892b0;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--accent-purple), var(--accent-teal));
    --gradient-secondary: linear-gradient(135deg, var(--accent-pink), var(--accent-amber));
    --gradient-dark: linear-gradient(135deg, var(--primary-dark), var(--accent-dark));
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 20px rgba(42, 250, 223, 0.3);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s ease;
    
    /* Borders */
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 20px;
    --border-radius-xl: 30px;
}

/* Background Image */
.background-image {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../images/svlent-bg.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    z-index: -2;
    opacity: 0.15;
}

/* Add dark overlay on top of background image */
.background-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg,
        rgba(10, 25, 47, 0.9) 0%,
        rgba(10, 25, 47, 0.85) 50%,
        rgba(29, 43, 83, 0.8) 100%
    );
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--primary-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* Background Animation */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.bg-particle {
    position: absolute;
    border-radius: 50%;
    background: var(--gradient-primary);
    animation: float 20s infinite linear;
    opacity: 0.1;
}

.bg-particle:nth-child(1) {
    width: 300px;
    height: 300px;
    top: 10%;
    left: 5%;
    animation-delay: 0s;
}

.bg-particle:nth-child(2) {
    width: 200px;
    height: 200px;
    top: 60%;
    right: 10%;
    animation-delay: -5s;
    background: var(--gradient-secondary);
}

.bg-particle:nth-child(3) {
    width: 150px;
    height: 150px;
    bottom: 20%;
    left: 20%;
    animation-delay: -10s;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
}

.bg-particle:nth-child(4) {
    width: 250px;
    height: 250px;
    top: 30%;
    right: 20%;
    animation-delay: -15s;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 25, 47, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(42, 250, 223, 0.1);
    z-index: 1000;
    padding: 1rem 0;
    transition: var(--transition-normal);
}

.navbar.scrolled {
    padding: 0.5rem 0;
    background: rgba(10, 25, 47, 0.98);
    box-shadow: var(--shadow-lg);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Logo Styles */
.brand-logo .logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    gap: 12px;
    transition: var(--transition-normal);
}

.logo-icon {
    font-size: 2rem;
    color: var(--accent-teal);
    transition: var(--transition-normal);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-main {
    font-family: 'Poppins', sans-serif;
    font-size: 1.8rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-sub {
    font-size: 0.75rem;
    color: var(--text-secondary);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.logo:hover .logo-icon {
    transform: rotate(15deg) scale(1.1);
}

/* Navigation Menu */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    position: relative;
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius-md);
    transition: var(--transition-normal);
}

.nav-link i {
    font-size: 1.1rem;
}

.nav-link:hover {
    color: var(--text-primary);
    background: rgba(42, 250, 223, 0.1);
}

.nav-link.active {
    color: var(--accent-teal);
    background: rgba(42, 250, 223, 0.15);
}

.nav-indicator {
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 4px;
    background: var(--accent-teal);
    border-radius: 50%;
    opacity: 0;
    transition: var(--transition-normal);
}

.nav-link.active .nav-indicator {
    opacity: 1;
    width: 20px;
}

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-toggle span {
    width: 25px;
    height: 2px;
    background: var(--accent-teal);
    transition: var(--transition-normal);
    border-radius: 2px;
}

/* Hero Section */
.hero {
    padding: 8rem 2rem 4rem;
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

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

.hero-title {
    font-family: 'Poppins', sans-serif;
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 3s ease infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-weight: 400;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Button Styles */
.btn-primary, .btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 1rem 2rem;
    border-radius: var(--border-radius-md);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-normal);
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: transparent;
    color: var(--accent-teal);
    border-color: var(--accent-teal);
}

.btn-secondary:hover {
    background: rgba(42, 250, 223, 0.1);
    transform: translateY(-3px);
}

/* Hero Visual */
.hero-visual {
    position: relative;
    height: 400px;
}

.floating-cards {
    position: relative;
    width: 100%;
    height: 100%;
}

.floating-card {
    position: absolute;
    background: var(--card-dark);
    border: 1px solid rgba(42, 250, 223, 0.2);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    box-shadow: var(--shadow-lg);
    transition: var(--transition-normal);
    animation: floatCard 6s ease-in-out infinite;
}

.floating-card i {
    font-size: 2.5rem;
    color: var(--accent-teal);
}

.floating-card span {
    font-weight: 600;
    color: var(--text-primary);
}

.card-1 {
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.card-2 {
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -2s;
    background: var(--gradient-primary);
}

.card-2 i {
    color: white;
}

.card-3 {
    bottom: 10%;
    right: 10%;
    animation-delay: -4s;
}

@keyframes floatCard {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(2deg); }
}

/* Container & Sections */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 5rem 0;
}

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

.section-header h2 {
    font-family: 'Poppins', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-teal));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Key Features List */
.key-features-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin: 3rem 0;
}

.feature-highlight {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: rgba(42, 250, 223, 0.05);
    border-radius: var(--border-radius-md);
    border: 1px solid rgba(42, 250, 223, 0.1);
    transition: var(--transition-normal);
}

.feature-highlight:hover {
    background: rgba(42, 250, 223, 0.1);
    transform: translateY(-3px);
}

.feature-highlight i {
    font-size: 1.5rem;
    color: var(--accent-teal);
}

.feature-highlight span {
    font-weight: 500;
    color: var(--text-primary);
}

.overview-text {
    margin-top: 3rem;
}

.overview-text p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
    font-size: 1.1rem;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: rgba(22, 33, 62, 0.7);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    border: 1px solid rgba(42, 250, 223, 0.1);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition-normal);
    z-index: 0;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent-teal);
    box-shadow: var(--shadow-glow);
}

.feature-card:hover::before {
    opacity: 0.05;
}

.feature-icon {
    font-size: 2.5rem;
    color: var(--accent-teal);
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 1;
}

.feature-card h3 {
    font-family: 'Poppins', sans-serif;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    position: relative;
    z-index: 1;
}

.feature-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 1;
    line-height: 1.6;
}

.feature-details {
    position: relative;
    z-index: 1;
}

.feature-details > p {
    color: var(--accent-teal);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.feature-list {
    list-style: none;
    position: relative;
    z-index: 1;
}

.feature-list li {
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.feature-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-teal);
}

/* Benefits Grid */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.benefit-card {
    background: rgba(22, 33, 62, 0.7);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    border: 1px solid rgba(42, 250, 223, 0.1);
    transition: var(--transition-normal);
    text-align: center;
    backdrop-filter: blur(10px);
}

.benefit-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-teal);
    box-shadow: var(--shadow-glow);
}

.benefit-icon {
    font-size: 2.5rem;
    color: var(--accent-teal);
    margin-bottom: 1.5rem;
}

.benefit-card h3 {
    font-family: 'Poppins', sans-serif;
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.benefit-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Summary Section */
.summary-section {
    background: rgba(22, 33, 62, 0.5);
    border-radius: var(--border-radius-xl);
    padding: 4rem;
    margin: 4rem 0;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(42, 250, 223, 0.1);
}

.summary-title {
    font-family: 'Poppins', sans-serif;
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.summary-point {
    padding: 1.5rem;
    background: rgba(42, 250, 223, 0.05);
    border-radius: var(--border-radius-md);
    border: 1px solid rgba(42, 250, 223, 0.1);
}

.summary-point h3 {
    font-family: 'Poppins', sans-serif;
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--accent-teal);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.summary-point p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.closing-statement {
    text-align: center;
    padding: 2rem;
    background: rgba(10, 25, 47, 0.5);
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(42, 250, 223, 0.1);
}

.closing-statement p {
    color: var(--text-primary);
    font-size: 1.2rem;
    line-height: 1.8;
    max-width: 800px;
    margin: 0 auto;
}

/* Footer */
.footer {
    background: rgba(10, 25, 47, 0.9);
    padding: 4rem 0 2rem;
    margin-top: 4rem;
    border-top: 1px solid rgba(42, 250, 223, 0.1);
    backdrop-filter: blur(10px);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.footer-brand {
    text-align: center;
    margin-bottom: 3rem;
}

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    font-family: 'Poppins', sans-serif;
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-teal);
    margin-bottom: 1rem;
}

.footer-logo i {
    font-size: 2.2rem;
}

.footer-tagline {
    color: var(--text-primary);
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.footer-mission {
    color: var(--text-secondary);
    font-size: 1rem;
    max-width: 600px;
    margin: 0 auto 2rem;
    line-height: 1.6;
}

/* Footer Buttons */
.footer-buttons {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.footer-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 0.8rem 1.5rem;
    border-radius: var(--border-radius-md);
    background: rgba(42, 250, 223, 0.1);
    border: 1px solid rgba(42, 250, 223, 0.2);
    color: var(--accent-teal);
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-normal);
}

.footer-btn:hover {
    background: rgba(42, 250, 223, 0.2);
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.footer-btn i {
    font-size: 1.2rem;
}

.footer-bottom {
    max-width: 1200px;
    margin: 3rem auto 0;
    padding: 2rem 2rem 0;
    border-top: 1px solid rgba(42, 250, 223, 0.1);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-bottom p {
    margin-bottom: 0.5rem;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

/* Animations */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        padding-top: 6rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--primary-dark);
        flex-direction: column;
        padding: 1rem;
        box-shadow: var(--shadow-lg);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .mobile-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .benefits-grid {
        grid-template-columns: 1fr;
    }
    
    .summary-section {
        padding: 2rem;
    }
    
    .summary-title {
        font-size: 2rem;
    }
    
    .summary-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-btn {
        width: 200px;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 1rem;
    }
    
    .hero {
        padding: 5rem 1rem 3rem;
    }
    
    .container {
        padding: 0 1rem;
    }
    
    .section {
        padding: 3rem 0;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .summary-section {
        padding: 1.5rem;
    }
}