/* Custom Styles for KI Coach Niederrhein */

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

/* Body Base */
body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    overflow-x: hidden;
}

/* Header Scroll Effect */
#header.scrolled {
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

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

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

/* Hover Effects */
.hover-scale {
    transition: transform 0.3s ease;
}

.hover-scale:hover {
    transform: scale(1.05);
}

/* Custom Gradient Text */
.gradient-text {
    background: linear-gradient(135deg, #16a34a 0%, #10b981 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* FAQ Accordion Styles */
.faq-item {
    transition: all 0.3s ease;
}

.faq-question {
    cursor: pointer;
    user-select: none;
}

.faq-question:hover {
    background-color: rgba(22, 163, 74, 0.05);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding-top: 1rem;
}

/* Form Styles */
input:focus, textarea:focus {
    box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.1);
}

/* Pulse Animation for CTA Buttons */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.8;
    }
}

.pulse-on-hover:hover {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 12px;
}

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

::-webkit-scrollbar-thumb {
    background: #16a34a;
    border-radius: 6px;
}

::-webkit-scrollbar-thumb:hover {
    background: #15803d;
}

/* Loading Animation */
.spinner {
    border: 3px solid rgba(22, 163, 74, 0.1);
    border-top: 3px solid #16a34a;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

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

/* Blog Card Hover Effect */
.blog-card {
    transition: all 0.3s ease;
}

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

/* Responsive Typography */
@media (max-width: 640px) {
    h1 {
        font-size: 2.25rem;
        line-height: 1.2;
    }
    
    h2 {
        font-size: 1.875rem;
        line-height: 1.3;
    }
}

/* Mobile Menu Transition */
#mobile-menu {
    transition: all 0.3s ease-in-out;
    max-height: 0;
    overflow: hidden;
}

#mobile-menu.active {
    max-height: 500px;
}

/* Section Spacing */
section {
    position: relative;
}

/* Decorative Elements */
.decorative-shape {
    position: absolute;
    opacity: 0.05;
    pointer-events: none;
}

/* Button Hover Effects */
.btn-primary {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.btn-primary::before {
    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;
}

.btn-primary:hover::before {
    width: 300px;
    height: 300px;
}

/* Print Styles */
@media print {
    header, footer, #mobile-menu-btn {
        display: none;
    }
    
    section {
        page-break-inside: avoid;
    }
}

/* 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;
}

/* Focus Visible for Keyboard Navigation */
a:focus-visible, button:focus-visible {
    outline: 3px solid #16a34a;
    outline-offset: 2px;
}

/* Dark Mode Support (optional) */
@media (prefers-color-scheme: dark) {
    /* Could be implemented later if needed */
}