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

/* ===== Keyframe Animations ===== */
@keyframes fadeInOut {
    0%, 100% {
        opacity: 0.4;
    }
    50% {
        opacity: 1;
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

:root {
    /* Color Palette - Spooky theme with modern accents */
    --primary-bg: #0a0a0f;
    --secondary-bg: #15151f;
    --card-bg: #1a1a28;
    --accent-purple: #9b59b6;
    --accent-orange: #ff6b35;
    --accent-green: #2ecc71;
    --text-primary: #f8f8f8;
    --text-secondary: #b8b8c8;
    --border-color: #2a2a3a;
    --hover-glow: rgba(155, 89, 182, 0.2);
    
    /* Typography */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Space Grotesk', var(--font-main);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2.5rem;
    --spacing-xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
}

body {
    font-family: var(--font-main);
    background: #160526;
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ===== Container ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
}

/* ===== Hero Section ===== */
.hero {
    text-align: center;
    padding: var(--spacing-sm) 0;
    margin-bottom: var(--spacing-sm);
}

.brand {
    font-family: var(--font-display);
    font-size: 3.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-purple) 0%, var(--accent-orange) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0 0 var(--spacing-xs) 0;
    text-align: center;
}

.logo-section {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-xs);
}

.logo-icon {
    width: 360px;
    height: 360px;
    object-fit: contain;
}

/* QR code image placed to the right of the logo and slightly lower */
.qr-image {
    width: 60px;
    height: 60px;
    object-fit: contain;
    margin-left: 0.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: white; /* ensures QR contrast */
    box-shadow: 0 8px 20px rgba(0,0,0,0.4);
}

.tagline {
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    font-style: italic;
}

.subtitle {
    font-size: 1.125rem;
    color: var(--accent-green);
    font-weight: 500;
}

/* ===== Features Section ===== */
.features {
    margin-bottom: var(--spacing-lg);
}

.features h2 {
    font-family: var(--font-display);
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-purple), var(--accent-orange));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-purple);
    box-shadow: 0 10px 30px var(--hover-glow);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.feature-content {
    flex: 1;
}

.feature-card h3 {
    font-family: var(--font-display);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.funded-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: linear-gradient(135deg, rgba(155, 89, 182, 0.2), rgba(255, 107, 53, 0.2));
    border: 1px solid var(--accent-purple);
    border-radius: 50px;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.95rem;
    font-weight: 500;
    margin: 0 auto;
    display: flex;
    width: fit-content;
}

.badge-icon {
    font-size: 1.25rem;
}

/* ===== Registration Section ===== */
.registration {
    margin-bottom: var(--spacing-xl);
}

.form-container {
    max-width: 600px;
    margin: 0 auto;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.form-container h2 {
    font-family: var(--font-display);
    font-size: 2rem;
    text-align: center;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    animation: fadeInOut 2s ease-in-out infinite;
}

.form-intro {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    font-size: 1rem;
}

.pre-register-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
    letter-spacing: 0.5px;
}

.form-group input,
.form-group textarea {
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-primary);
    font-family: var(--font-main);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-purple);
    box-shadow: 0 0 0 3px var(--hover-glow);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.submit-btn {
    background: linear-gradient(135deg, var(--accent-purple), var(--accent-orange));
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    animation: pulse 2s ease-in-out infinite;
}

.submit-btn:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 10px 30px rgba(155, 89, 182, 0.4);
    animation: none;
}

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

.submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-loader {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.form-message {
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    text-align: center;
    font-weight: 500;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-message.success {
    background: rgba(46, 204, 113, 0.2);
    border: 1px solid var(--accent-green);
    color: var(--accent-green);
}

.form-message.error {
    background: rgba(231, 76, 60, 0.2);
    border: 1px solid #e74c3c;
    color: #e74c3c;
}

/* ===== Footer ===== */
.footer {
    text-align: center;
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--border-color);
    margin-top: var(--spacing-xl);
    color: var(--text-secondary);
}

.footer p {
    margin-bottom: var(--spacing-xs);
}

.footer-tagline {
    font-style: italic;
    font-size: 0.9rem;
    opacity: 0.7;
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    .brand {
        font-size: 2.5rem;
    }
    
    .logo-icon {
        width: 270px;
        height: 270px;
    }
    
    .tagline {
        font-size: 1.25rem;
    }
    
    .features h2 {
        font-size: 2rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .form-container {
        padding: var(--spacing-lg);
    }
    
    .container {
        padding: var(--spacing-md) var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .brand {
        font-size: 2rem;
    }
    
    .logo-section {
        flex-direction: row;
        gap: 0.25rem;
    }
    
    .logo-icon {
        width: 200px;
        height: 200px;
    }
    
    .qr-image {
        width: 80px;
        height: 80px;
    }
    
    .form-container {
        padding: var(--spacing-md);
    }
}