/* Custom Styles for Portfolio Website */

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

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: linear-gradient(to bottom, #6366f1, #8b5cf6);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(to bottom, #4f46e5, #7c3aed);
}

/* Grid pattern for hero section */
.bg-grid-pattern {
    background-image:
        linear-gradient(to right, rgba(255, 255, 255, 0.1) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
}

/* Fade-in animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.8s ease-out;
}

.animate-fade-in {
    animation: fadeIn 0.8s ease-out;
}

.animate-fade-in-delay-1 {
    animation: fadeIn 0.8s ease-out 0.2s both;
}

.animate-fade-in-delay-2 {
    animation: fadeIn 0.8s ease-out 0.4s both;
}

.animate-fade-in-delay-3 {
    animation: fadeIn 0.8s ease-out 0.6s both;
}

/* Fade in on scroll */
.fade-in-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Navigation active state */
.nav-link.active {
    color: #6366f1;
    font-weight: 600;
}

/* Navbar shadow on scroll */
.navbar-scrolled {
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

/* Card hover effects */
.hover-lift {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* Gradient text */
.gradient-text {
    background: linear-gradient(to right, #6366f1, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Custom button styles */
.btn-gradient {
    background: linear-gradient(to right, #6366f1, #8b5cf6);
    transition: all 0.3s ease;
}

.btn-gradient:hover {
    background: linear-gradient(to right, #4f46e5, #7c3aed);
    box-shadow: 0 10px 15px -3px rgba(99, 102, 241, 0.3);
}

/* Skill bar animations */
@keyframes fillBar {
    from {
        width: 0;
    }
}

.skill-bar {
    animation: fillBar 1.5s ease-out;
}

/* Gallery filter active state */
.gallery-filter.active {
    background: linear-gradient(to right, #6366f1, #8b5cf6);
    color: white;
    box-shadow: 0 4px 6px -1px rgba(99, 102, 241, 0.3);
}

/* Gallery item fade */
.gallery-item {
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.gallery-item.hidden {
    display: none;
}

/* Lightbox styles */
#lightbox {
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease-out;
}

#lightbox img {
    animation: fadeIn 0.3s ease-out;
}

/* Form focus styles */
input:focus,
textarea:focus {
    outline: none;
    border-color: #6366f1;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* Loading spinner */
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.spinner {
    animation: spin 1s linear infinite;
}

/* Form success/error messages */
.form-message {
    padding: 1rem;
    border-radius: 0.5rem;
    margin-top: 1rem;
    animation: fadeIn 0.3s ease-out;
}

.form-message.success {
    background-color: #d1fae5;
    color: #065f46;
    border: 1px solid #10b981;
}

.form-message.error {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #ef4444;
}

/* Mobile menu animation */
#mobile-menu {
    animation: slideDown 0.3s ease-out;
}

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

/* Responsive adjustments */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }
}

/* Print styles */
@media print {
    nav,
    footer,
    #contact {
        display: none;
    }

    section {
        page-break-inside: avoid;
    }
}

/* 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-width: 0;
}

/* Focus visible for keyboard navigation */
a:focus-visible,
button:focus-visible {
    outline: 2px solid #6366f1;
    outline-offset: 2px;
}

/* Smooth transitions for theme changes */
* {
    transition-property: background-color, border-color, color;
    transition-duration: 0.2s;
    transition-timing-function: ease-in-out;
}

/* Disable transitions on page load */
.preload * {
    transition: none !important;
}

/* Custom selection color */
::selection {
    background-color: #6366f1;
    color: white;
}

::-moz-selection {
    background-color: #6366f1;
    color: white;
}

/* Pulse animation for active elements */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

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

/* Bounce animation for scroll indicator */
@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.animate-bounce {
    animation: bounce 2s infinite;
}

/* Gradient border effect */
.gradient-border {
    position: relative;
    background: white;
}

.gradient-border::before {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: inherit;
    background: linear-gradient(to right, #6366f1, #8b5cf6);
    z-index: -1;
}

/* Stats counter animation */
@keyframes countUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.stat-number {
    animation: countUp 0.8s ease-out;
}

/* Hover glow effect */
.hover-glow {
    transition: all 0.3s ease;
}

.hover-glow:hover {
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.5);
}

/* Card flip animation */
@keyframes flipIn {
    from {
        transform: perspective(400px) rotateY(90deg);
        opacity: 0;
    }
    to {
        transform: perspective(400px) rotateY(0deg);
        opacity: 1;
    }
}

.flip-in {
    animation: flipIn 0.6s ease-out;
}

/* Typing animation effect */
@keyframes typing {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

@keyframes blink {
    50% {
        border-color: transparent;
    }
}

.typing-effect {
    overflow: hidden;
    border-right: 3px solid;
    white-space: nowrap;
    animation: typing 3.5s steps(40, end), blink 0.75s step-end infinite;
}

/* Parallax effect placeholder */
.parallax {
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}

/* Skeleton loading animation */
@keyframes shimmer {
    0% {
        background-position: -468px 0;
    }
    100% {
        background-position: 468px 0;
    }
}

.skeleton {
    animation: shimmer 1.2s ease-in-out infinite;
    background: linear-gradient(to right, #f0f0f0 8%, #e0e0e0 18%, #f0f0f0 33%);
    background-size: 800px 104px;
}

/* Image lazy load fade */
img[loading="lazy"] {
    opacity: 0;
    transition: opacity 0.3s;
}

img[loading="lazy"].loaded {
    opacity: 1;
}