/* Custom Styles */
@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800&display=swap');

body {
    font-family: 'Nunito', sans-serif;
}

.animate-fade-in {
    animation: fadeIn 1s ease-in;
}

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

/* Slide Styles */
.slide-container {
    position: relative;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    overflow: hidden;
}

.slide-wrapper {
    display: flex;
    transition: transform 0.5s ease-in-out;
}

.slide {
    min-width: 100%;
    display: none;
}

.slide.active {
    display: block;
}

.slide video,
.slide img {
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.slide-controls {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

.slide-btn {
    background: #3b82f6;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
}

.slide-btn:hover {
    background: #2563eb;
    transform: translateY(-2px);
}

.slide-btn:disabled {
    background: #93c5fd;
    cursor: not-allowed;
    transform: none;
}

.slide-indicators {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1rem;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #bfdbfe;
    cursor: pointer;
    transition: all 0.3s;
}

.indicator.active {
    background: #2563eb;
    transform: scale(1.2);
}

/* Progress Bar */
.progress-bar {
    width: 100%;
    height: 6px;
    background: #e0e7ff;
    border-radius: 3px;
    margin-bottom: 2rem;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #3b82f6, #2563eb);
    transition: width 0.3s ease;
    border-radius: 3px;
}

/* Course Header */
.course-header {
    background: linear-gradient(135deg, #3b82f6 0%, #1e40af 100%);
    color: white;
    padding: 3rem 0;
    margin-bottom: 3rem;
}

/* Lesson Card */
.lesson-card {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: all 0.3s;
}

.lesson-card:hover {
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

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

/* Course Card Image Styles */
.course-image {
    height: 160px;
    position: relative;
    overflow: hidden;
    background-size: cover;
    background-position: center;
}

.course-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.1;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='1'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

/* Arduino Course */
.course-arduino {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    position: relative;
}

.course-arduino::after {
    content: '';
    position: absolute;
    width: 100px;
    height: 100px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    top: -50px;
    right: -50px;
}

.course-arduino::before {
    content: '';
    position: absolute;
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    bottom: -40px;
    left: -40px;
}

/* Games Course */
.course-games {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 50%, #4facfe 100%);
    position: relative;
    overflow: hidden;
}

.course-games::after {
    content: '';
    position: absolute;
    width: 120%;
    height: 120%;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 10px,
        rgba(255, 255, 255, 0.1) 10px,
        rgba(255, 255, 255, 0.1) 20px
    );
    top: -10%;
    left: -10%;
    animation: slide 20s linear infinite;
}

@keyframes slide {
    0% { transform: translate(0, 0); }
    100% { transform: translate(20px, 20px); }
}

/* Roblox Course */
.course-roblox {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    position: relative;
}

.course-roblox::after {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.2) 0%, transparent 50%);
}

/* Scratch Course */
.course-scratch {
    background: linear-gradient(135deg, #30cfd0 0%, #330867 100%);
    position: relative;
}

.course-scratch::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(30deg, rgba(255, 255, 255, 0.1) 12%, transparent 12.5%, transparent 87%, rgba(255, 255, 255, 0.1) 87.5%, rgba(255, 255, 255, 0.1)),
        linear-gradient(150deg, rgba(255, 255, 255, 0.1) 12%, transparent 12.5%, transparent 87%, rgba(255, 255, 255, 0.1) 87.5%, rgba(255, 255, 255, 0.1)),
        linear-gradient(30deg, rgba(255, 255, 255, 0.1) 12%, transparent 12.5%, transparent 87%, rgba(255, 255, 255, 0.1) 87.5%, rgba(255, 255, 255, 0.1)),
        linear-gradient(150deg, rgba(255, 255, 255, 0.1) 12%, transparent 12.5%, transparent 87%, rgba(255, 255, 255, 0.1) 87.5%, rgba(255, 255, 255, 0.1));
    background-size: 40px 40px;
    background-position: 0 0, 0 0, 20px 20px, 20px 20px;
}

/* Python Course */
.course-python {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
}

.course-python::after {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(255, 255, 255, 0.1) 2px, rgba(255, 255, 255, 0.1) 4px),
        repeating-linear-gradient(90deg, transparent, transparent 2px, rgba(255, 255, 255, 0.1) 2px, rgba(255, 255, 255, 0.1) 4px);
}

/* Minecraft Course */
.course-minecraft {
    background: linear-gradient(135deg, #f6d365 0%, #fda085 100%);
    position: relative;
}

.course-minecraft::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(45deg, rgba(0, 0, 0, 0.1) 25%, transparent 25%),
        linear-gradient(-45deg, rgba(0, 0, 0, 0.1) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, rgba(0, 0, 0, 0.1) 75%),
        linear-gradient(-45deg, transparent 75%, rgba(0, 0, 0, 0.1) 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}

/* HTML/CSS Course */
.course-html {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    position: relative;
}

.course-html::after {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 70% 70%, rgba(255, 255, 255, 0.2) 0%, transparent 50%);
}

/* JavaScript Course */
.course-javascript {
    background: linear-gradient(135deg, #fbc2eb 0%, #a6c1ee 100%);
    position: relative;
}

.course-javascript::after {
    content: '';
    position: absolute;
    width: 150%;
    height: 150%;
    background: conic-gradient(from 0deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    top: -25%;
    left: -25%;
    animation: rotate 10s linear infinite;
}

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

/* Apps Mobile Course */
.course-mobile {
    background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
    position: relative;
}

.course-mobile::after {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.2) 50%, transparent 100%),
        linear-gradient(0deg, transparent 0%, rgba(255, 255, 255, 0.2) 50%, transparent 100%);
    background-size: 30px 30px;
}

/* Design Games Course */
.course-design {
    background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 50%, #fecfef 100%);
    position: relative;
}

.course-design::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(circle, rgba(255, 255, 255, 0.3) 1px, transparent 1px);
    background-size: 25px 25px;
}

/* AI Course */
.course-ai {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    position: relative;
    overflow: hidden;
}

.course-ai::after {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: 
        repeating-linear-gradient(45deg, transparent, transparent 10px, rgba(255, 255, 255, 0.05) 10px, rgba(255, 255, 255, 0.05) 20px);
    top: -50%;
    left: -50%;
    animation: move 15s linear infinite;
}

@keyframes move {
    0% { transform: translate(0, 0); }
    100% { transform: translate(20px, 20px); }
}

/* LEGO Course */
.course-lego {
    background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
    position: relative;
}

.course-lego::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(0deg, rgba(0, 0, 0, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, 0.1) 1px, transparent 1px);
    background-size: 15px 15px;
}

/* 3D Printing Course */
.course-3d {
    background: linear-gradient(135deg, #89f7fe 0%, #66a6ff 100%);
    position: relative;
}

.course-3d::after {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        repeating-linear-gradient(0deg, transparent, transparent 8px, rgba(255, 255, 255, 0.2) 8px, rgba(255, 255, 255, 0.2) 16px);
}

/* Animation Course */
.course-animation {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    position: relative;
}

.course-animation::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at center, rgba(255, 255, 255, 0.3) 0%, transparent 70%);
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

/* Video Editing Course */
.course-video {
    background: linear-gradient(135deg, #30cfd0 0%, #330867 100%);
    position: relative;
}

.course-video::after {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%),
        linear-gradient(-45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
}

/* Web Development Course */
.course-web {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    position: relative;
}

.course-web::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(30deg, rgba(255, 255, 255, 0.1) 12%, transparent 12.5%, transparent 87%, rgba(255, 255, 255, 0.1) 87.5%, rgba(255, 255, 255, 0.1)),
        linear-gradient(150deg, rgba(255, 255, 255, 0.1) 12%, transparent 12.5%, transparent 87%, rgba(255, 255, 255, 0.1) 87.5%, rgba(255, 255, 255, 0.1));
    background-size: 30px 30px;
}

/* Security Course */
.course-security {
    background: linear-gradient(135deg, #434343 0%, #000000 100%);
    position: relative;
}

.course-security::after {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(255, 255, 255, 0.1) 2px, rgba(255, 255, 255, 0.1) 4px),
        repeating-linear-gradient(90deg, transparent, transparent 2px, rgba(255, 255, 255, 0.1) 2px, rgba(255, 255, 255, 0.1) 4px);
}

/* IoT Course */
.course-iot {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
}

.course-iot::after {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 25% 25%, rgba(255, 255, 255, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(255, 255, 255, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
}

/* Chatbots Course */
.course-chatbot {
    background: linear-gradient(135deg, #fbc2eb 0%, #a6c1ee 100%);
    position: relative;
}

.course-chatbot::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(45deg, rgba(255, 255, 255, 0.1) 25%, transparent 25%),
        linear-gradient(-45deg, rgba(255, 255, 255, 0.1) 25%, transparent 25%);
    background-size: 20px 20px;
}

/* Drones Course */
.course-drones {
    background: linear-gradient(135deg, #89f7fe 0%, #66a6ff 100%);
    position: relative;
}

.course-drones::after {
    content: '';
    position: absolute;
    width: 120%;
    height: 120%;
    background: 
        repeating-linear-gradient(45deg, transparent, transparent 15px, rgba(255, 255, 255, 0.1) 15px, rgba(255, 255, 255, 0.1) 30px);
    top: -10%;
    left: -10%;
    animation: drift 20s linear infinite;
}

@keyframes drift {
    0% { transform: translate(0, 0) rotate(0deg); }
    100% { transform: translate(30px, 30px) rotate(360deg); }
}

/* Flutter Course */
.course-flutter {
    background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
    position: relative;
}

.course-flutter::after {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.2) 50%, transparent 100%);
    background-size: 40px 100%;
    animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
    0%, 100% { transform: translateX(-100%); }
    50% { transform: translateX(100%); }
}

/* Machine Learning Course */
.course-ml {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    position: relative;
    overflow: hidden;
}

.course-ml::after {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: 
        conic-gradient(from 0deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    top: -50%;
    left: -50%;
    animation: spin 8s linear infinite;
}

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