/* BioNote AI - Liquid Glass Design System */

/* CSS Variables */
:root {
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: rgba(0, 0, 0, 0.3);
    --glow-cyan: rgba(34, 211, 238, 0.4);
    --glow-purple: rgba(168, 85, 247, 0.4);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Glassmorphism Effects */
.glass-nav {
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: 0 8px 32px var(--glass-shadow);
}

.glass-card {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(16px) saturate(160%);
    -webkit-backdrop-filter: blur(16px) saturate(160%);
    border: 1px solid var(--glass-border);
    box-shadow: 0 8px 32px var(--glass-shadow);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.glass-card:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

.glass-button {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(12px) saturate(150%);
    -webkit-backdrop-filter: blur(12px) saturate(150%);
    border: 1px solid var(--glass-border);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}

.glass-button:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.glass-button-primary {
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.2), rgba(168, 85, 247, 0.2));
    backdrop-filter: blur(12px) saturate(150%);
    -webkit-backdrop-filter: blur(12px) saturate(150%);
    border: 1px solid rgba(34, 211, 238, 0.3);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}

.glass-button-primary:hover {
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.3), rgba(168, 85, 247, 0.3));
    border-color: rgba(34, 211, 238, 0.5);
    transform: translateY(-2px);
    box-shadow: 0 0 30px var(--glow-cyan);
}

/* Hover Glow Effect */
.hover-glow {
    position: relative;
    overflow: hidden;
}

.hover-glow::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: radial-gradient(circle, var(--glow-cyan), transparent);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
    pointer-events: none;
    opacity: 0;
}

.hover-glow:hover::before {
    width: 300px;
    height: 300px;
    opacity: 0.2;
}

/* Lift Animation */
.hover-lift {
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.hover-lift:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4), 0 0 40px var(--glow-purple);
}

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

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

/* Gradient Text */
.bg-clip-text {
    -webkit-background-clip: text;
    background-clip: text;
}

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

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: rgba(15, 23, 42, 0.5);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, rgba(34, 211, 238, 0.5), rgba(168, 85, 247, 0.5));
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, rgba(34, 211, 238, 0.7), rgba(168, 85, 247, 0.7));
}

/* Responsive Design */
@media (max-width: 768px) {
    .glass-card {
        padding: 2rem 1.5rem;
    }
    
    h1 {
        font-size: 3rem;
    }
    
    h2 {
        font-size: 2rem;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus States */
button:focus,
a:focus {
    outline: 2px solid rgba(34, 211, 238, 0.5);
    outline-offset: 4px;
}

/* Selection Styling */
::selection {
    background: rgba(34, 211, 238, 0.3);
    color: white;
}

::-moz-selection {
    background: rgba(34, 211, 238, 0.3);
    color: white;
}