:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #ec4899;
    --accent: #10b981;
    --comet: #7dd3fc;
    --dark: #0f172a;
    --darker: #020617;
    --light: #f8fafc;
    --gray: #1e293b;
    --gray-light: #334155;
    --glass: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.12);
    --glass-highlight: rgba(255, 255, 255, 0.15);
    --gradient: linear-gradient(135deg, var(--primary), var(--secondary));
    --gradient-comet: linear-gradient(135deg, var(--primary), var(--comet));
    --gradient-accent: linear-gradient(135deg, var(--primary), var(--accent));
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.3);
    --radius: 2.5px;
    --radius-sm: 4px;
    --radius-lg: 12px;
    --blur: blur(16px);
    --header-height: 70px;
    --gradient-windows: linear-gradient(135deg, #0078D7, #00BCF2);
    --gradient-mac: linear-gradient(135deg, #999999, #FFFFFF);
    --gradient-android: linear-gradient(135deg, #3DDC84, #0F9D58);
    --gradient-ios: linear-gradient(135deg, #5AC8FA, #007AFF);
}

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

body {
    font-family: var(--font-main);
    background-color: var(--darker);
    color: var(--light);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-image: 
        radial-gradient(at 80% 0%, hsla(189, 100%, 56%, 0.1) 0px, transparent 50%),
        radial-gradient(at 0% 50%, hsla(355, 100%, 93%, 0.1) 0px, transparent 50%);
}

/* Background Elements */
.bg-blur {
    position: fixed;
    inset: 0;
    z-index: -2;
    background: linear-gradient(135deg, var(--darker) 0%, var(--dark) 100%);
}

.floating-elements {
    position: fixed;
    inset: 0;
    z-index: -1;
    overflow: hidden;
    opacity: 0.3;
    pointer-events: none;
}

.floating-element {
    position: absolute;
    border-radius: 50%;
    background: var(--gradient-comet);
    filter: blur(60px);
    opacity: 0.5;
    animation: float 25s infinite ease-in-out;
    will-change: transform, opacity;
    transform: translateZ(0);
    backface-visibility: hidden;
}

@keyframes float {
    0%, 100% {
        transform: translate3d(0, 0, 0) rotate(0deg) scale(1);
        opacity: 0.5;
    }
    33% {
        transform: translate3d(30vw, 20vh, 0) rotate(120deg) scale(1.1);
        opacity: 0.7;
    }
    66% {
        transform: translate3d(20vw, 40vh, 0) rotate(240deg) scale(0.9);
        opacity: 0.6;
    }
}

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

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: var(--comet);
    border-radius: 50%;
    opacity: 0;
    animation: particleFloat 15s infinite linear;
}

@keyframes particleFloat {
    0% {
        transform: translateY(0) translateX(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100vh) translateX(100px);
        opacity: 0;
    }
}

/* Container and Main Content */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    width: 100%;
}

main {
    flex: 1;
    padding: 2rem 0;
}

/* Sections */
.section {
    display: none;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.4s ease, transform 0.4s ease;
    will-change: opacity, transform;
}

.section.active {
    display: block;
    opacity: 1;
    transform: translateY(0);
    animation: fadeIn 0.5s ease forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Section Titles */
.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: 1.5rem;
    background: var(--gradient-comet);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1.2;
    letter-spacing: -0.03em;
    font-weight: 800;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gradient-comet);
    border-radius: 2px;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.6s ease;
}

.section.active .section-title::after {
    transform: scaleX(1);
}

.section-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: var(--comet);
    font-weight: 600;
}

/* Improved Buttons with Rectangular Design */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 1.75rem;
    border-radius: var(--radius); /* Now uses the smaller radius */
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
    position: relative;
    overflow: hidden;
    z-index: 1;
    will-change: transform;
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    min-height: 48px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    border: 1px solid transparent;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    z-index: -1;
    border-radius: inherit;
    transition: var(--transition);
}

.btn:hover::before {
    background: var(--glass-highlight);
    border-color: rgba(255, 255, 255, 0.25);
}

.btn-primary {
    background: var(--gradient-comet);
    background-size: 200% 200%;
    color: white;
    box-shadow: var(--shadow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    animation: gradientShift 3s ease infinite;
}

/* Secondary Button Style */
.btn-secondary {
    background: var(--glass);
    color: var(--light);
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
    background: var(--glass-highlight);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

/* Accent Button Style */
.btn-accent {
    background: var(--gradient-accent);
    color: white;
}

.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(16, 185, 129, 0.3);
}

/* Outline Button Style */
.btn-outline {
    background: transparent;
    color: var(--comet);
    border: 2px solid var(--comet);
}

.btn-outline:hover {
    background: var(--comet);
    color: var(--dark);
    transform: translateY(-2px);
}

/* Button Sizes */
.btn-sm {
    padding: 0.75rem 1.25rem;
    font-size: 0.875rem;
    min-height: 40px;
}

.btn-lg {
    padding: 1.25rem 2rem;
    font-size: 1.125rem;
    min-height: 56px;
}

/* Button with Icon */
.btn-icon {
    gap: 0.5rem;
}

.btn-icon i {
    font-size: 1.125em;
}

/* Button Group */
.btn-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn-group .btn {
    flex: 1;
    min-width: 120px;
}

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

/* Card Design Improvements */
.card {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 1.5rem;
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    transition: var(--transition);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
    border-color: rgba(255, 255, 255, 0.15);
}

/* Form Elements */
.input-group {
    margin-bottom: 1.5rem;
}

.input-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--comet);
}

.input-field {
    width: 100%;
    padding: 1rem;
    border-radius: var(--radius);
    background: var(--glass);
    border: 1px solid var(--glass-border);
    color: var(--light);
    font-size: 1rem;
    transition: var(--transition);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
}

.input-field:focus {
    outline: none;
    border-color: var(--comet);
    box-shadow: 0 0 0 3px rgba(125, 211, 252, 0.1);
}

/* Navigation Improvements */
.nav-item {
    border-radius: var(--radius);
    transition: var(--transition);
}

.nav-item.active {
    background: var(--glass-highlight);
}

/* Animations */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }
}

.pulse {
    animation: pulse 2s infinite;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .container {
        padding: 0 1.5rem;
    }
    
    .btn-group {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    .btn {
        padding: 0.875rem 1.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1.25rem;
    }
    
    .hero h1 {
        font-size: 2.25rem;
    }
    
    .btn {
        padding: 0.875rem 1.25rem;
        font-size: 0.9rem;
    }
    
    .btn-group .btn {
        min-width: 100%;
    }
}