/* Custom animations and transitions */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
    animation: fadeIn 0.5s ease-out;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #555;
}

/* Hover effects for cards */
.card-hover {
    transition: all 0.3s ease;
}

.card-hover:hover {
    transform: translateY(-5px);
}

/* Gradient text */
.gradient-text {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Service card special styling */
.service-card {
    border-left: 4px solid transparent;
    transition: all 0.3s ease;
}

.service-card:hover {
    border-left-color: currentColor;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

/* Smooth scroll behavior */
html {
    scroll-behavior: smooth;
}
/* Active navigation state */
.nav-active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white !important;
}

/* Loading spinner */
.spinner {
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
    display: inline-block;
    margin-left: 10px;
}

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

/* Demo page specific styles */
.demo-textarea {
    transition: all 0.3s ease;
}

.demo-textarea:focus {
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.demo-button {
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.demo-button::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.demo-button:active::after {
    width: 300px;
    height: 300px;
}

/* Result cards animation */
.result-card {
    animation: slideIn 0.5s ease-out;
}

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

/* Key phrase tags */
.keyphrase-tag {
    animation: popIn 0.3s ease-out;
}

@keyframes popIn {
    0% {
        transform: scale(0);
        opacity: 0;
    }
    80% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}