/* Root Variables */
:root {
    --primary: #0056b3;
    --secondary: #00d2ff;
    --dark: #0a0f1d;
    --accent: #1a3a52;
    --glass: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    background: radial-gradient(circle at top right, #1a2a4a, var(--dark));
    min-height: 100vh;
    font-family: 'Inter', system-ui, sans-serif;
    color: #fff;
    line-height: 1.6;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
}

p {
    color: rgba(255, 255, 255, 0.8);
}

a {
    color: inherit;
    text-decoration: none;
}

/* Accessibility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.sr-only:focus {
    position: static;
    width: auto;
    height: auto;
    padding: inherit;
    margin: inherit;
    overflow: visible;
    clip: auto;
    white-space: normal;
}

/* Glass Morphism Card */
.glass-card {
    background: var(--glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.glass-card::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;
}

.glass-card:hover {
    transform: translateY(-8px) scale(1.02);
    border-color: var(--secondary);
    box-shadow: 0 12px 48px 0 rgba(0, 210, 255, 0.15);
}

.glass-card:hover::before {
    left: 100%;
}

/* Gradient Text */
.gradient-text {
    background: linear-gradient(to right, #fff, var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Hero Gradient */
.hero-gradient {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(0, 210, 255, 0.5);
    }
    50% {
        box-shadow: 0 0 40px rgba(0, 210, 255, 0.8);
    }
}

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

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.animate-slide-in-left {
    animation: slideInLeft 0.6s ease-out;
}

.animate-slide-in-right {
    animation: slideInRight 0.6s ease-out;
}

.animate-pulse-glow {
    animation: pulse-glow 2s ease-in-out infinite;
}

/* Buttons */
button, a.button {
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    outline: none;
}

button:focus, a.button:focus {
    outline: 2px solid var(--secondary);
    outline-offset: 2px;
}

/* Forms */
input, textarea, select {
    font-family: inherit;
    font-size: 1rem;
}

input:focus, textarea:focus, select:focus {
    outline: 2px solid var(--secondary);
    outline-offset: 2px;
}

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

::-webkit-scrollbar-track {
    background: var(--dark);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(to bottom, var(--primary), var(--secondary));
    border-radius: 10px;
    transition: var(--transition);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary);
}

/* Selection */
::selection {
    background: var(--secondary);
    color: var(--dark);
}

::-moz-selection {
    background: var(--secondary);
    color: var(--dark);
}

/* Responsive Utilities */
@media (max-width: 768px) {
    body {
        font-size: 16px;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .glass-card {
        border-radius: 16px;
    }
}

/* Print Styles */
@media print {
    header, footer, .glass-card {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
}