* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #0a0e27 0%, #0f1535 50%, #1a0f3d 100%);
    color: #e0e0e0;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
}

/* Animated Stars Background */
.stars {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
}

.stars::before,
.stars::after {
    content: '';
    position: absolute;
    width: 2px;
    height: 2px;
    background: #fff;
    box-shadow: 100px 100px #fff, 200px 50px #fff, 300px 150px #fff, 400px 80px #fff,
                500px 200px #fff, 600px 120px #fff, 700px 170px #fff, 800px 90px #fff,
                100px 300px #fff, 200px 350px #fff, 300px 400px #fff, 400px 350px #fff,
                500px 380px #fff, 600px 320px #fff, 700px 370px #fff, 800px 300px #fff,
                150px 500px #fff, 250px 550px #fff, 350px 520px #fff, 450px 580px #fff,
                550px 510px #fff, 650px 540px #fff, 750px 560px #fff, 850px 500px #fff;
    animation: twinkle 5s infinite ease-in-out;
}

.stars::after {
    animation-delay: 2.5s;
    box-shadow: 50px 150px #fff, 150px 200px #fff, 250px 100px #fff, 350px 250px #fff,
                450px 150px #fff, 550px 280px #fff, 650px 180px #fff, 750px 260px #fff,
                100px 350px #fff, 200px 400px #fff, 300px 380px #fff, 400px 420px #fff,
                500px 450px #fff, 600px 390px #fff, 700px 430px #fff, 800px 380px #fff;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

/* Container */
.container {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 60px;
    animation: slideDown 0.8s ease;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 20px;
}

.logo-icon {
    font-size: 48px;
    animation: bounce 2s infinite;
}

.logo h1 {
    font-size: 48px;
    background: linear-gradient(135deg, #00f5ff 0%, #0066ff 50%, #00ff88 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    letter-spacing: 2px;
    text-shadow: 0 0 30px rgba(0, 245, 255, 0.3);
}

.subtitle {
    font-size: 18px;
    color: #00f5ff;
    font-weight: 300;
    margin-top: 10px;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Progress Section */
.progress-section {
    background: rgba(15, 21, 53, 0.8);
    border: 2px solid rgba(0, 245, 255, 0.3);
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 50px;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(0, 245, 255, 0.1);
    animation: fadeIn 0.8s ease 0.2s both;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.progress-info h2 {
    font-size: 24px;
    color: #00f5ff;
}

.progress-stats {
    font-size: 20px;
    font-weight: 600;
    color: #00ff88;
}

.progress-bar-container {
    width: 100%;
    height: 30px;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 15px;
    overflow: hidden;
    border: 2px solid rgba(0, 245, 255, 0.2);
    margin-bottom: 20px;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, #00f5ff 0%, #0066ff 50%, #00ff88 100%);
    width: 0%;
    transition: width 0.8s ease;
    box-shadow: 0 0 20px rgba(0, 245, 255, 0.8);
}

.reset-btn {
    background: rgba(0, 0, 0, 0.5);
    border: 2px solid #ff6b6b;
    color: #ff6b6b;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.reset-btn:hover {
    background: rgba(255, 107, 107, 0.2);
    box-shadow: 0 0 15px rgba(255, 107, 107, 0.5);
}

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

/* Downloads Section */
.downloads-section {
    margin-bottom: 60px;
}

.section-title {
    font-size: 32px;
    margin-bottom: 30px;
    background: linear-gradient(135deg, #00f5ff 0%, #0066ff 50%, #00ff88 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeIn 0.8s ease 0.3s both;
}

.downloads-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    animation: fadeIn 0.8s ease 0.4s both;
}

.download-card {
    background: rgba(15, 21, 53, 0.8);
    border: 2px solid rgba(0, 245, 255, 0.3);
    border-radius: 15px;
    padding: 25px;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.download-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 245, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.download-card:hover {
    border-color: rgba(0, 245, 255, 0.8);
    box-shadow: 0 10px 40px rgba(0, 245, 255, 0.2);
    transform: translateY(-5px);
}

.download-card:hover::before {
    left: 100%;
}

.card-icon {
    font-size: 48px;
    margin-bottom: 15px;
}

.download-card h3 {
    font-size: 20px;
    color: #00f5ff;
    margin-bottom: 10px;
}

.file-info {
    font-size: 12px;
    color: #00ff88;
    margin-bottom: 10px;
    font-weight: 600;
}

.description {
    font-size: 14px;
    color: #b0b0b0;
    margin-bottom: 20px;
    line-height: 1.5;
}

.download-btn {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, #00f5ff 0%, #0066ff 100%);
    border: none;
    border-radius: 8px;
    color: #0a0e27;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 14px;
}

.download-btn:hover {
    box-shadow: 0 0 20px rgba(0, 245, 255, 0.6);
    transform: scale(1.05);
}

.download-btn:active {
    transform: scale(0.95);
}

/* Guide Section */
.guide-section {
    animation: fadeIn 0.8s ease 0.5s both;
}

.steps-container {
    display: grid;
    gap: 20px;
}

.step-card {
    background: rgba(15, 21, 53, 0.8);
    border: 2px solid rgba(0, 245, 255, 0.2);
    border-radius: 12px;
    padding: 25px;
    backdrop-filter: blur(10px);
    display: grid;
    grid-template-columns: 60px 1fr 60px;
    gap: 20px;
    align-items: start;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.step-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.1), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.step-card:hover {
    border-color: rgba(0, 245, 255, 0.8);
    box-shadow: 0 8px 30px rgba(0, 245, 255, 0.2);
    transform: translateX(10px);
}

.step-card.completed {
    border-color: rgba(0, 255, 136, 0.8);
    background: rgba(0, 255, 136, 0.05);
}

.step-card.completed::before {
    opacity: 1;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #00f5ff 0%, #0066ff 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 700;
    color: #0a0e27;
    box-shadow: 0 5px 20px rgba(0, 245, 255, 0.4);
}

.step-card.completed .step-number {
    background: linear-gradient(135deg, #00ff88 0%, #00ffcc 100%);
}

.step-content {
    position: relative;
    z-index: 1;
}

.step-content h3 {
    font-size: 18px;
    color: #00f5ff;
    margin-bottom: 10px;
}

.step-content p {
    color: #d0d0d0;
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 15px;
}

.step-content p strong {
    color: #00ff88;
}

.tips {
    background: rgba(0, 255, 136, 0.1);
    border-left: 4px solid #00ff88;
    padding: 12px;
    border-radius: 6px;
    font-size: 13px;
    color: #e0e0e0;
}

.tips strong {
    color: #00ff88;
}

.step-check {
    width: 60px;
    height: 60px;
    background: rgba(0, 0, 0, 0.5);
    border: 2px solid rgba(0, 245, 255, 0.3);
    border-radius: 50%;
    color: #00f5ff;
    font-size: 24px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-check:hover {
    background: rgba(0, 245, 255, 0.2);
    border-color: rgba(0, 245, 255, 0.8);
    box-shadow: 0 0 15px rgba(0, 245, 255, 0.5);
    transform: scale(1.1);
}

.step-card.completed .step-check {
    background: linear-gradient(135deg, #00ff88 0%, #00ffcc 100%);
    border-color: #00ff88;
    color: #0a0e27;
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.6);
}

/* Completion Message */
.completion-message {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9998;
    opacity: 0;
    pointer-events: none;
    transition: all 0.5s ease;
}

.completion-message.show {
    opacity: 1;
    pointer-events: auto;
}

.completion-content {
    background: rgba(15, 21, 53, 0.95);
    border: 3px solid rgba(0, 255, 136, 0.8);
    border-radius: 20px;
    padding: 60px 40px;
    text-align: center;
    max-width: 500px;
    box-shadow: 0 0 60px rgba(0, 255, 136, 0.4);
    animation: popUp 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.completion-content h2 {
    font-size: 48px;
    color: #00ff88;
    margin-bottom: 20px;
}

.completion-content p {
    font-size: 18px;
    color: #e0e0e0;
    margin-bottom: 15px;
    line-height: 1.6;
}

.completion-content button {
    background: linear-gradient(135deg, #00ff88 0%, #00ffcc 100%);
    border: none;
    color: #0a0e27;
    padding: 15px 40px;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    margin-top: 20px;
    transition: all 0.3s ease;
}

.completion-content button:hover {
    transform: scale(1.05);
    box-shadow: 0 0 30px rgba(0, 255, 136, 0.5);
}

@keyframes popUp {
    0% {
        transform: scale(0.5) rotateX(-90deg);
        opacity: 0;
    }
    100% {
        transform: scale(1) rotateX(0);
        opacity: 1;
    }
}

/* Footer */
.footer {
    text-align: center;
    margin-top: 80px;
    padding: 30px;
    border-top: 2px solid rgba(0, 245, 255, 0.2);
    color: #888;
    font-size: 14px;
}

.footer p {
    margin: 5px 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 20px 15px;
    }

    .logo h1 {
        font-size: 36px;
    }

    .logo-icon {
        font-size: 36px;
    }

    .step-card {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto;
    }

    .step-number {
        width: 50px;
        height: 50px;
        font-size: 24px;
    }

    .step-check {
        width: 50px;
        height: 50px;
        font-size: 20px;
    }

    .progress-info {
        flex-direction: column;
        gap: 10px;
        align-items: flex-start;
    }

    .completion-content {
        padding: 40px 20px;
        max-width: 90%;
    }

    .completion-content h2 {
        font-size: 36px;
    }
}

@media (max-width: 480px) {
    .section-title {
        font-size: 24px;
    }

    .downloads-grid {
        grid-template-columns: 1fr;
    }

    .logo h1 {
        font-size: 28px;
    }

    .step-content h3 {
        font-size: 16px;
    }

    .step-content p {
        font-size: 13px;
    }
}