:root {
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: rgba(0, 0, 0, 0.1);
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --accent-glow: rgba(102, 126, 234, 0.4);
    --blur-amount: 20px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
    overflow-x: hidden;
}

/* Glass Card Component */
.glass-card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(var(--blur-amount));
    -webkit-backdrop-filter: blur(var(--blur-amount));
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1),
                0 2px 8px rgba(0, 0, 0, 0.08),
                inset 0 1px 0 rgba(255, 255, 255, 0.5);
    padding: 32px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.glass-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.15),
                0 4px 12px rgba(0, 0, 0, 0.1);
    border-color: rgba(255, 255, 255, 0.4);
}

/* Glass Button */
.glass-btn {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 16px;
    padding: 14px 32px;
    color: white;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    outline: none;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.glass-btn: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;
}

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

.glass-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15),
                0 0 20px var(--accent-glow);
    border-color: rgba(255, 255, 255, 0.5);
}

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

/* Glass Input Fields */
.glass-input {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    padding: 14px 18px;
    color: white;
    font-size: 16px;
    width: 100%;
    outline: none;
    transition: all 0.3s ease;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.glass-input::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.glass-input:focus {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.5);
    box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.1),
                inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Glass Container (Main Layout) */
.glass-container {
    max-width: 1400px;
    margin: 40px auto;
    padding: 0 24px;
}

/* Glass Panel (Floating) */
.glass-panel {
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(30px);
    border-radius: 28px;
    border: 1px solid rgba(255, 255, 255, 0.25);
    padding: 24px;
    box-shadow: 0 16px 64px rgba(0, 0, 0, 0.15),
                0 4px 16px rgba(0, 0, 0, 0.1);
}

/* Micro-interactions */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-in {
    animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

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