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

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 50%, #0a0a0a 100%);
    color: #e0e0e0;
    overflow-x: hidden;
    scroll-behavior: smooth;
}

.container {
    max-width: 1200px;
}

/* Gradient Text */
.gradient-text {
    background: linear-gradient(135deg, #8B5CF6, #3B82F6, #06B6D4);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradientShift 3s ease-in-out infinite;
    font-size: 3rem;
    font-weight: 900;
    text-align: center;
    margin-bottom: 2rem;
}

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

/* Hero Section */
.hero-bg {
    background-image: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.4)), url('../img/hero-background.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    position: relative;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, transparent 0%, rgba(0,0,0,0.3) 100%);
    pointer-events: none;
}

/* Navigation */
header {
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.nav-link {
    position: relative;
    color: #e0e0e0;
    transition: all 0.3s ease;
    padding: 8px 16px;
    border-radius: 8px;
    text-decoration: none;
}

.nav-link:hover {
    color: #3B82F6;
    background: rgba(59, 130, 246, 0.1);
    transform: translateY(-2px);
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 2px;
    left: 50%;
    background: linear-gradient(90deg, #8B5CF6, #3B82F6);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 80%;
}

/* Card Styles */
.card {
    background: linear-gradient(145deg, #1a1a1a, #2a2a2a);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.3),
        0 0 0 1px rgba(255, 255, 255, 0.05);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #8B5CF6, #3B82F6, #06B6D4);
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 
        0 30px 60px rgba(0, 0, 0, 0.4),
        0 0 0 1px rgba(59, 130, 246, 0.3),
        0 0 30px rgba(59, 130, 246, 0.1);
}

.card-img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform 0.4s ease;
    filter: brightness(0.9) contrast(1.1);
}

.card:hover .card-img {
    transform: scale(1.05);
    filter: brightness(1) contrast(1.2);
}

.tag {
    display: inline-block;
    background: linear-gradient(135deg, #3B82F6, #8B5CF6);
    color: #ffffff;
    padding: 6px 16px;
    border-radius: 25px;
    font-size: 0.75rem;
    font-weight: 700;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.card h3 {
    font-size: 1.75rem;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 8px;
    background: linear-gradient(135deg, #ffffff, #e0e0e0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.card .price {
    font-size: 1.1rem;
    font-weight: 600;
    color: #06B6D4;
    margin-bottom: 16px;
    text-shadow: 0 0 10px rgba(6, 182, 212, 0.3);
}

.card .description {
    font-size: 0.95rem;
    color: #c0c0c0;
    line-height: 1.7;
    margin-bottom: 16px;
}

.pros-cons {
    margin: 16px 0;
}

.pros-cons p {
    font-size: 0.9rem;
    margin-bottom: 6px;
    padding: 4px 0;
    transition: transform 0.2s ease;
}

.pros-cons p:hover {
    transform: translateX(5px);
}

.positive {
    color: #10B981;
    text-shadow: 0 0 10px rgba(16, 185, 129, 0.3);
}

.negative {
    color: #EF4444;
    text-shadow: 0 0 10px rgba(239, 68, 68, 0.3);
}

.verdict {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(59, 130, 246, 0.05);
    border-radius: 8px;
    padding: 16px;
    margin: 16px -6px -6px -6px;
}

/* Section Titles */
section h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
}

/* Reveal Animation */
.reveal {
    position: relative;
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.reveal.active {
    transform: translateY(0);
    opacity: 1;
}

/* Responsive Design */
@media (max-width: 768px) {
    .gradient-text {
        font-size: 2rem;
    }
    
    section h2 {
        font-size: 2rem;
    }
    
    .card {
        margin-bottom: 2rem;
    }
    
    .nav-link {
        padding: 6px 12px;
        font-size: 0.9rem;
    }
}

/* Loading Animation */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.loading {
    animation: pulse 2s infinite;
}

/* Smooth Scrolling Enhancement */
html {
    scroll-behavior: smooth;
}

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

::-webkit-scrollbar-track {
    background: #1a1a1a;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #3B82F6, #8B5CF6);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #2563EB, #7C3AED);
}