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

:root {
    --bg-primary: #0a0e27;
    --bg-secondary: #161b33;
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --spacing-md: 2rem;
    --spacing-sm: 1rem;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
    position: relative;
}

/* Animated Background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
    animation: backgroundPulse 10s ease-in-out infinite;
    pointer-events: none;
    z-index: -1;
}

@keyframes backgroundPulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 0.8; }
}

/* Container */
.container {
    max-width: 700px;
    width: 100%;
    padding: var(--spacing-md);
    animation: fadeIn 0.8s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Twitter Embed */
.twitter-tweet {
    margin: 0 auto !important;
}

/* OSCS Button */
.oscs-button {
    display: block;
    width: fit-content;
    margin: 2rem auto 0;
    padding: 0.875rem 2rem;
    background: var(--bg-secondary);
    color: white;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.oscs-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.oscs-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
    border-color: rgba(255, 255, 255, 0.2);
}

.oscs-button:hover::before {
    opacity: 1;
}

.oscs-button:active {
    transform: translateY(0);
}

/* Footer */
.footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.75rem;
    font-style: italic;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 1rem;
    }
}

/* Loading State */
.twitter-tweet:not(.twitter-tweet-rendered) {
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

/* Selection Styling */
::selection {
    background: var(--accent-primary);
    color: white;
}

::-moz-selection {
    background: var(--accent-primary);
    color: white;
}