/* Additional 3D Effects and Animations */

/* Enhanced Mobile Touch Interactions */
@media (max-width: 768px) {
    .course-card, .lab-card, .code-card {
        transform: none;
        transition: all 0.2s ease;
    }
    
    .course-card:active, .lab-card:active, .code-card:active {
        transform: scale(0.95);
        box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
    }
    
    .btn-primary:active, .btn-secondary:active {
        transform: scale(0.95);
    }
    
    /* Mobile menu animation */
    .nav-menu {
        opacity: 0;
        visibility: hidden;
        transform: translateY(-20px);
        transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    }
    
    .nav-menu.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    
    .nav-menu li {
        transform: translateX(-100px);
        opacity: 0;
        transition: all 0.4s ease;
    }
    
    .nav-menu.active li {
        transform: translateX(0);
        opacity: 1;
    }
    
    .nav-menu.active li:nth-child(1) { transition-delay: 0.1s; }
    .nav-menu.active li:nth-child(2) { transition-delay: 0.2s; }
    .nav-menu.active li:nth-child(3) { transition-delay: 0.3s; }
    .nav-menu.active li:nth-child(4) { transition-delay: 0.4s; }
    .nav-menu.active li:nth-child(5) { transition-delay: 0.5s; }
    .nav-menu.active li:nth-child(6) { transition-delay: 0.6s; }
}

/* Enhanced 3D Card Effects */
.course-card, .lab-card, .code-card {
    transform-style: preserve-3d;
    perspective: 1000px;
}

@media (min-width: 769px) {
    .course-card:hover, .lab-card:hover, .code-card:hover {
        transform: translateY(-15px) rotateX(10deg) rotateY(5deg) scale(1.05);
        box-shadow: 
            0 20px 40px rgba(99, 102, 241, 0.2),
            0 0 0 1px rgba(99, 102, 241, 0.1);
    }
    
    /* 3D Flip Effect on Double Click */
    .course-card.flipped, .lab-card.flipped, .code-card.flipped {
        transform: rotateY(180deg) scale(1.1);
        transition: transform 0.8s ease-in-out;
    }
    
    /* Floating Animation */
    .course-card {
        animation: float-course 6s ease-in-out infinite;
    }
    
    .lab-card {
        animation: float-course 6s ease-in-out infinite;
        animation-delay: 1.5s;
    }
    
    .code-card {
        animation: float-course 6s ease-in-out infinite;
        animation-delay: 3s;
    }
}

@keyframes float-course {
    0%, 100% { 
        transform: translateY(0px) rotateX(0deg);
    }
    25% { 
        transform: translateY(-5px) rotateX(2deg);
    }
    50% { 
        transform: translateY(0px) rotateX(0deg);
    }
    75% { 
        transform: translateY(-3px) rotateX(-1deg);
    }
}

/* Particle Trail Effect */
.course-card::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.4), transparent);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: all 0.6s ease;
    z-index: -1;
}

.course-card:hover::before {
    width: 200px;
    height: 200px;
    opacity: 0.3;
}

/* 3D Text Effects */
.course-card h3, .lab-card h3, .code-card h3 {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.course-card h3::after, .lab-card h3::after, .code-card h3::after {
    content: attr(data-text);
    position: absolute;
    top: 2px;
    left: 0;
    background: linear-gradient(45deg, rgba(99, 102, 241, 0.3), rgba(139, 92, 246, 0.3));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    z-index: -1;
    transition: all 0.3s ease;
}

.course-card:hover h3::after, .lab-card:hover h3::after, .code-card:hover h3::after {
    transform: translate(3px, 3px);
    opacity: 0.7;
}

/* Holographic Effect */
.course-card.holographic {
    background: linear-gradient(45deg, 
        rgba(99, 102, 241, 0.1),
        rgba(139, 92, 246, 0.1),
        rgba(6, 182, 212, 0.1));
    background-size: 400% 400%;
    animation: holographic 4s ease-in-out infinite;
}

@keyframes holographic {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* Magnetic Attraction Effect */
.course-card.magnetic {
    transition: all 0.1s ease-out;
}

/* Glitch Effect */
.course-card.glitch {
    animation: glitch 2s infinite;
}

@keyframes glitch {
    0%, 100% { transform: translate(0); }
    10% { transform: translate(-2px, -1px); }
    20% { transform: translate(2px, 1px); }
    30% { transform: translate(-1px, 2px); }
    40% { transform: translate(1px, -2px); }
    50% { transform: translate(-2px, 1px); }
    60% { transform: translate(2px, -1px); }
    70% { transform: translate(-1px, -2px); }
    80% { transform: translate(1px, 2px); }
    90% { transform: translate(-2px, -1px); }
}

/* 3D Scene Background for Theory Section */
#theory {
    position: relative;
    overflow: hidden;
}

#theory::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 20%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 60%, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
    animation: backgroundFlow 10s ease-in-out infinite;
    z-index: 0;
}

@keyframes backgroundFlow {
    0%, 100% { 
        transform: scale(1) rotate(0deg);
        opacity: 0.3;
    }
    33% { 
        transform: scale(1.1) rotate(120deg);
        opacity: 0.5;
    }
    66% { 
        transform: scale(0.9) rotate(240deg);
        opacity: 0.4;
    }
}

/* Floating geometric shapes */
.geometric-shape {
    position: absolute;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    opacity: 0.1;
    animation: geometricFloat 8s ease-in-out infinite;
    z-index: 0;
}

.geometric-shape:nth-child(1) {
    width: 60px;
    height: 60px;
    top: 10%;
    left: 10%;
    clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
    animation-delay: 0s;
}

.geometric-shape:nth-child(2) {
    width: 40px;
    height: 40px;
    top: 20%;
    right: 15%;
    border-radius: 50%;
    animation-delay: 2s;
}

.geometric-shape:nth-child(3) {
    width: 50px;
    height: 50px;
    bottom: 15%;
    left: 20%;
    clip-path: polygon(20% 0%, 80% 0%, 100% 50%, 80% 100%, 20% 100%, 0% 50%);
    animation-delay: 4s;
}

.geometric-shape:nth-child(4) {
    width: 35px;
    height: 35px;
    bottom: 25%;
    right: 25%;
    transform: rotate(45deg);
    animation-delay: 6s;
}

@keyframes geometricFloat {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    25% {
        transform: translateY(-20px) rotate(90deg);
    }
    50% {
        transform: translateY(0px) rotate(180deg);
    }
    75% {
        transform: translateY(-15px) rotate(270deg);
    }
}

/* Course card entrance animation */
.course-card {
    opacity: 0;
    transform: translateY(50px) rotateX(-30deg);
    animation: courseEntrance 0.8s ease-out forwards;
}

.course-card:nth-child(1) { animation-delay: 0.1s; }
.course-card:nth-child(2) { animation-delay: 0.2s; }
.course-card:nth-child(3) { animation-delay: 0.3s; }
.course-card:nth-child(4) { animation-delay: 0.4s; }
.course-card:nth-child(5) { animation-delay: 0.5s; }
.course-card:nth-child(6) { animation-delay: 0.6s; }

@keyframes courseEntrance {
    to {
        opacity: 1;
        transform: translateY(0) rotateX(0deg);
    }
}

/* Energy pulse effect */
.course-card.energy-pulse {
    animation: energyPulse 2s ease-in-out infinite;
}

@keyframes energyPulse {
    0%, 100% {
        box-shadow: 
            0 0 20px rgba(99, 102, 241, 0.3),
            inset 0 0 20px rgba(99, 102, 241, 0.1);
    }
    50% {
        box-shadow: 
            0 0 40px rgba(99, 102, 241, 0.6),
            inset 0 0 30px rgba(99, 102, 241, 0.2);
    }
}

/* Glowing effect for buttons */
.btn-primary, .btn-secondary, .login-form button {
    position: relative;
    overflow: hidden;
}

.btn-primary::before, .btn-secondary::before, .login-form button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.5s ease;
}

.btn-primary:hover::before, .btn-secondary:hover::before, .login-form button:hover::before {
    left: 100%;
}

/* Floating particles animation */
.floating-particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 50%;
    opacity: 0.3;
    animation: float-particle 15s infinite linear;
}

@keyframes float-particle {
    0% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 0.3;
    }
    90% {
        opacity: 0.3;
    }
    100% {
        transform: translateY(-100px) rotate(360deg);
        opacity: 0;
    }
}

/* Enhanced loading animation */
.book-loader h2 {
    background: linear-gradient(45deg, #fff, #f0f0f0, #fff);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

/* Neon glow effect for theme toggle */
.theme-toggle button {
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.3);
    transition: all 0.3s ease;
}

.theme-toggle button:hover {
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.6);
    transform: rotate(180deg) scale(1.2);
}

/* Ripple effect for clickable elements */
.ripple {
    position: relative;
    overflow: hidden;
}

.ripple::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.ripple:active::after {
    width: 300px;
    height: 300px;
}

/* Gradient text animation */
.gradient-text {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color), var(--accent-color));
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 3s ease-in-out infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* Pulsing animation for important elements */
.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

/* Morphing shapes */
.morphing-shape {
    width: 100px;
    height: 100px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    animation: morph 4s ease-in-out infinite;
}

@keyframes morph {
    0%, 100% { 
        border-radius: 50%;
        transform: rotate(0deg);
    }
    25% { 
        border-radius: 20%;
        transform: rotate(90deg);
    }
    50% { 
        border-radius: 0%;
        transform: rotate(180deg);
    }
    75% { 
        border-radius: 20%;
        transform: rotate(270deg);
    }
}

/* Text shadow effects */
.text-shadow {
    text-shadow: 
        0 1px 0 rgba(255,255,255,0.4),
        0 2px 4px rgba(0,0,0,0.1),
        0 4px 8px rgba(0,0,0,0.1);
}

/* Glass morphism effect */
.glass-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
}

/* Tilt effect */
.tilt {
    transition: transform 0.3s ease;
}

.tilt:hover {
    transform: perspective(1000px) rotateX(10deg) rotateY(10deg);
}

/* Magnetic hover effect */
.magnetic {
    transition: transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.magnetic:hover {
    transform: translate(10px, -10px);
}

/* Bouncing animation */
.bounce-in {
    animation: bounceIn 0.8s ease-out;
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

/* Slide in animations */
.slide-in-left {
    animation: slideInLeft 0.8s ease-out;
}

.slide-in-right {
    animation: slideInRight 0.8s ease-out;
}

@keyframes slideInLeft {
    0% {
        opacity: 0;
        transform: translateX(-100px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    0% {
        opacity: 0;
        transform: translateX(100px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Stagger animation for grid items */
.stagger-item {
    opacity: 0;
    transform: translateY(30px);
    animation: staggerIn 0.6s ease-out forwards;
}

.stagger-item:nth-child(1) { animation-delay: 0.1s; }
.stagger-item:nth-child(2) { animation-delay: 0.2s; }
.stagger-item:nth-child(3) { animation-delay: 0.3s; }
.stagger-item:nth-child(4) { animation-delay: 0.4s; }
.stagger-item:nth-child(5) { animation-delay: 0.5s; }
.stagger-item:nth-child(6) { animation-delay: 0.6s; }

@keyframes staggerIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Enhanced mobile responsiveness */
@media (max-width: 768px) {
    .floating-cube, .floating-sphere {
        display: none;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .course-card, .lab-card, .code-card {
        padding: 20px;
    }
    
    .modal-content {
        width: 95%;
        margin: 10% auto;
        padding: 20px;
    }
}