/* Premium Design System */
:root {
    /* Premium gradients */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-secondary: linear-gradient(135deg, #ec4899 0%, #f43f5e 100%);
    --gradient-accent: linear-gradient(135deg, #14b8a6 0%, #10b981 100%);
    --gradient-hero: linear-gradient(270deg, #6366f1, #8b5cf6, #ec4899, #f43f5e);
    
    /* Premium shadows */
    --shadow-glass: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    --shadow-premium: 0 10px 40px rgba(0, 0, 0, 0.12);
    --shadow-hover: 0 20px 60px rgba(0, 0, 0, 0.15);
}

/* Glassmorphism navbar */
.navbar-glass {
    background: rgba(255, 255, 255, 0.85) !important;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.18);
    transition: all 0.3s ease;
}

.navbar-glass.scrolled {
    background: rgba(255, 255, 255, 0.95) !important;
    box-shadow: var(--shadow-premium);
}

/* Premium card design */
.card-premium {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.18);
    box-shadow: var(--shadow-glass);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.card-premium:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-hover);
}

/* Animated gradient hero */
.hero-gradient-animated {
    background: var(--gradient-hero);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
}

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

/* Premium button */
.btn-premium {
    background: var(--gradient-primary);
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
}

.btn-premium::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-premium:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.4);
}

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

/* Tech badge premium style */
.tech-badge-premium {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    border: 1px solid rgba(139, 92, 246, 0.2);
    transition: all 0.3s ease;
}

.tech-badge-premium:hover {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2) 0%, rgba(139, 92, 246, 0.2) 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.2);
}

/* Floating animation */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.float-animation {
    animation: float 6s ease-in-out infinite;
}

/* Glow effect */
.glow-text {
    text-shadow: 0 0 20px rgba(139, 92, 246, 0.5);
}

/* Premium navigation link */
.nav-link-premium {
    position: relative;
    transition: all 0.3s ease;
}

/* Premium navigation link */
.nav-link-premium {
    position: relative;
    transition: all 0.3s ease;
    padding-bottom: 4px; /* Add padding to give space for underline */
}

.nav-link-premium::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    transition: all 0.3s ease;
    border-radius: 2px;
}

.nav-link-premium:hover::after {
    width: 100%;
}

.nav-link-premium.active::after {
    width: 100%;
}