/* Additional CSS for enhanced styling */

/* Loading Animation */
.loading {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.loading.loaded {
    opacity: 1;
    transform: translateY(0);
}

/* Typing Effect for Hero Section */
.typing-text {
    border-right: 2px solid #fff;
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { border-color: transparent; }
    51%, 100% { border-color: #fff; }
}

/* Enhanced Button Hover Effects */
.btn-primary-custom {
    position: relative;
    overflow: hidden;
}

.btn-primary-custom::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.btn-primary-custom:hover::before {
    left: 100%;
}

/* Project Card Enhanced Animations */
.project-card {
    position: relative;
    overflow: hidden;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(30, 64, 175, 0.1));
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
}

.project-card:hover::before {
    opacity: 1;
}

.project-card-body {
    position: relative;
    z-index: 2;
}

/* Skills Animation */
.skill-category {
    position: relative;
    overflow: hidden;
}

.skill-category::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.1) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.skill-category:hover::after {
    opacity: 1;
}

.skill-category > * {
    position: relative;
    z-index: 2;
}

/* Scroll Progress Bar */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    z-index: 9999;
    transition: width 0.1s ease;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--secondary-color);
    transform: translateY(-3px);
}

/* Enhanced Contact Form */
.contact-form {
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 25px;
}

.form-label {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.form-control {
    border: 2px solid #e5e7eb;
    border-radius: 10px;
    padding: 12px 15px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(37, 99, 235, 0.25);
}

/* Dark Mode Styles */
@media (prefers-color-scheme: dark) {
    :root {
        --text-dark: #f8fafc;
        --text-light: #cbd5e1;
        --bg-light: #1e293b;
    }
    
    body {
        background-color: #0f172a;
        color: var(--text-dark);
    }
    
    .navbar {
        background: rgba(15, 23, 42, 0.95) !important;
    }
    
    .project-card,
    .skill-category,
    .contact-info {
        background: #1e293b;
        border: 1px solid #334155;
    }
    
    .contact-section {
        background: #0f172a;
    }
}

/* Print Styles */
@media print {
    .navbar,
    .social-icons,
    .back-to-top {
        display: none !important;
    }
    
    .hero {
        min-height: auto;
        padding: 20px 0;
    }
    
    .section-padding {
        padding: 30px 0;
    }
    
    .project-card {
        break-inside: avoid;
        margin-bottom: 20px;
    }
}

/* Accessibility Improvements */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus Styles */
a:focus,
button:focus,
.form-control:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .btn-primary-custom {
        border: 2px solid currentColor;
    }
    
    .project-card,
    .skill-category {
        border: 2px solid var(--text-dark);
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Loading States */
.btn-loading {
    position: relative;
    color: transparent !important;
}

.btn-loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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