/* Modern Dark Theme - Sleek & Contemporary */

body {
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 50%, #0f0f0f 100%);
    background-attachment: fixed;
    color: #e8e8e8;
    font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Glassmorphism effect */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(120, 119, 198, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(120, 219, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    letter-spacing: -0.02em;
}

h1 {
    text-align: center;
    margin-top: 30px;
    font-size: clamp(1.8rem, 4vw, 3rem);
    background: linear-gradient(135deg, #64b5f6 0%, #90caf9 50%, #bbdefb 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 30px rgba(100, 181, 246, 0.3);
}

nav {
    background: rgba(20, 20, 20, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

nav .nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

nav a, nav span {
    color: #e8e8e8;
    text-decoration: none;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

nav a::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s;
}

nav a:hover::before {
    left: 100%;
}

nav a:hover {
    background: rgba(100, 181, 246, 0.1);
    color: #64b5f6;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(100, 181, 246, 0.2);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    position: relative;
}

/* Modern card styles */
.card, .form-container, .feature-card, .product-card {
    background: rgba(25, 25, 25, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 24px;
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.card:hover, .feature-card:hover, .product-card:hover {
    transform: translateY(-4px);
    box-shadow: 
        0 16px 48px rgba(0, 0, 0, 0.4),
        0 0 0 1px rgba(100, 181, 246, 0.1);
}

/* Modern buttons */
.btn {
    background: linear-gradient(135deg, #64b5f6 0%, #1976d2 100%);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 12px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(100, 181, 246, 0.3);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s;
}

.btn:hover::before {
    left: 100%;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(100, 181, 246, 0.4);
}

.btn:active {
    transform: translateY(0);
}

footer {
    background: rgba(15, 15, 15, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #888;
    font-size: 0.9em;
    margin-top: 60px;
    padding: 40px 0;
}

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

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.1);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #64b5f6, #1976d2);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #1976d2, #64b5f6);
}

/* Selection styling */
::selection {
    background: rgba(100, 181, 246, 0.3);
    color: #fff;
}

/* Focus states */
*:focus {
    outline: 2px solid rgba(100, 181, 246, 0.5);
    outline-offset: 2px;
}