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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 50%, #0f0f0f 100%);
    min-height: 100vh;
    color: #e2e8f0;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.header {
    text-align: center;
    margin-bottom: 40px;
    color: #f8fafc;
}

.header-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-bottom: 15px;
}

.header-logo img {
    height: 200px;
    width: 200px;
    object-fit: contain;
    filter: invert(1) sepia(1) saturate(3) hue-rotate(15deg) brightness(1.2);
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0;
    background: linear-gradient(135deg, #f8fafc 0%, #cbd5e1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header .tagline {
    font-size: 1.1rem;
    color: #94a3b8;
    font-weight: 400;
}

.main-content {
    background: rgba(20, 20, 20, 0.9);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(60, 60, 60, 0.3);
    border-radius: 24px;
    padding: 40px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
}

.footer {
    text-align: center;
    margin-top: 40px;
    padding: 20px;
    color: #ff8c00;
    font-weight: 500;
    font-size: 0.9rem;
}

.spinner {
    border: 3px solid rgba(80, 80, 80, 0.3);
    border-top: 3px solid #ff8c00;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto 16px;
}

.spinner-large {
    border: 4px solid rgba(80, 80, 80, 0.3);
    border-top: 4px solid #ff8c00;
    border-radius: 50%;
    width: 56px;
    height: 56px;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@media (max-width: 768px) {
    .container {
        padding: 12px;
    }

    .main-content {
        padding: 24px;
    }

    .header-logo {
        flex-direction: column;
        gap: 12px;
    }

    .header-logo img {
        height: 120px;
        width: 120px;
    }

    .header h1 {
        font-size: 1.8rem;
    }
}

/* Notification Styles */
.credit-notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 16px 24px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
    z-index: 10000;
    opacity: 0;
    transform: translateX(400px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
    max-width: 400px;
}

.credit-notification.show {
    opacity: 1;
    transform: translateX(0);
    pointer-events: auto;
}

.credit-notification.success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    border-left: 4px solid #34d399;
}

.credit-notification.error {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
    border-left: 4px solid #f87171;
}

.credit-notification.warning {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    color: white;
    border-left: 4px solid #fbbf24;
}

.credit-notification.info {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: white;
    border-left: 4px solid #60a5fa;
}

@media (max-width: 768px) {
    .credit-notification {
        top: 10px;
        right: 10px;
        left: 10px;
        max-width: none;
        padding: 12px 16px;
        font-size: 13px;
    }
}