/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #ffffff;
    background: #0a0a0a;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.5rem;
    color: #ffffff;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 8px;
    position: relative;
}

.logo-icon::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 16px;
    height: 16px;
    background: white;
    border-radius: 50%;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #667eea;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%);
    z-index: -2;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.2) 0%, transparent 50%);
    z-index: -1;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.gradient-text {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 8px 32px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

/* Hero Image */
.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.device-mockup {
    position: relative;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.phone-frame {
    width: 300px;
    height: 600px;
    background: linear-gradient(145deg, #2a2a2a, #1a1a1a);
    border-radius: 30px;
    padding: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    position: relative;
}

.phone-frame::before {
    content: '';
    position: absolute;
    top: 15px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: #666;
    border-radius: 2px;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(145deg, #1a1a2e, #16213e);
    border-radius: 20px;
    overflow: hidden;
}

.app-preview {
    padding: 1rem;
    height: 100%;
}

.app-header {
    height: 60px;
    background: rgba(102, 126, 234, 0.2);
    border-radius: 12px;
    margin-bottom: 1rem;
}

.game-tiles {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.game-tile {
    aspect-ratio: 1;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.3), rgba(118, 75, 162, 0.3));
    border-radius: 12px;
    animation: pulse 2s ease-in-out infinite;
}

.game-tile:nth-child(2) { animation-delay: 0.5s; }
.game-tile:nth-child(3) { animation-delay: 1s; }
.game-tile:nth-child(4) { animation-delay: 1.5s; }

@keyframes pulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

/* Features Section */
.features {
    padding: 6rem 0;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.7);
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.2);
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: white;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #ffffff;
}

.feature-description {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

/* Download Section */
.download {
    padding: 6rem 0;
    background: #0a0a0a;
}

.download-content {
    text-align: center;
}

.download-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.download-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.platform-detection {
    margin-bottom: 2rem;
}

.detected-text {
    color: #667eea;
    font-weight: 500;
    font-size: 1.1rem;
}

.download-buttons {
    display: flex;
    gap: 2rem;
    justify-content: center;
    margin-bottom: 4rem;
    flex-wrap: wrap;
}

.download-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 2rem;
    width: 280px;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.download-btn:hover {
    transform: translateY(-3px);
    border-color: #667eea;
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.2);
}

.download-btn.android:hover {
    border-color: #3ddc84;
    box-shadow: 0 20px 40px rgba(61, 220, 132, 0.2);
}

.btn-content {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.5rem;
}

.btn-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.android .btn-icon {
    background: linear-gradient(135deg, #3ddc84 0%, #2e7d32 100%);
}

.btn-text {
    text-align: left;
}

.btn-title {
    display: block;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
}

.btn-platform {
    display: block;
    font-size: 1.25rem;
    font-weight: 600;
    color: #ffffff;
}

.btn-size {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
}

.download-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.info-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.info-card h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #667eea;
}

.info-card ul {
    list-style: none;
}

.info-card li {
    padding: 0.5rem 0;
    color: rgba(255, 255, 255, 0.8);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.info-card li:last-child {
    border-bottom: none;
}

/* FAQ Section */
.faq {
    padding: 6rem 0;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.faq-item {
    background: rgba(255, 255, 255, 0.05);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    transition: transform 0.3s ease;
}

.faq-item:hover {
    transform: translateY(-2px);
}

.faq-question {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #ffffff;
}

.faq-answer {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

/* Footer */
.footer {
    background: #0a0a0a;
    padding: 4rem 0 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #ffffff;
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #667eea;
}

.footer-description {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
    margin-top: 1rem;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.modal-content {
    background: rgba(20, 20, 40, 0.98);
    border-radius: 18px;
    box-shadow: 0 8px 40px rgba(102,126,234,0.10);
    padding: 0;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    max-width: 350px;
    width: 95%;
    overflow: visible;
}

.modal-header {
    padding: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.modal-close {
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.7);
    font-size: 2rem;
    cursor: pointer;
    transition: color 0.3s ease;
}

.modal-close:hover {
    color: #ffffff;
}

.modal-body {
    padding: 2rem;
    text-align: center;
}

.download-progress {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.progress-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    animation: bounce 1s ease-in-out infinite;
}

@keyframes bounce {
    0%, 20%, 53%, 80%, 100% { transform: translateY(0); }
    40%, 43% { transform: translateY(-15px); }
    70% { transform: translateY(-5px); }
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    overflow: hidden;
    margin-top: 1rem;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
    width: 0%;
    border-radius: 4px;
    animation: progress 3s ease-in-out;
}

@keyframes progress {
    0% { width: 0%; }
    100% { width: 100%; }
}

/* Login Modal Styles */
.login-form {
    max-width: 400px;
    margin: 0 auto;
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin: 0 auto 1rem;
}

.login-header h4 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #ffffff;
}

.login-header p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #ffffff;
    font-weight: 500;
    font-size: 0.9rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.875rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    color: #ffffff;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.form-group textarea {
    min-height: 80px;
    resize: vertical;
}

.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 2rem;
}

.form-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin: 0;
    accent-color: #667eea;
}

.form-checkbox label {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.85rem;
    line-height: 1.4;
    margin: 0;
}

.terms-link {
    color: #667eea;
    text-decoration: none;
    transition: color 0.3s ease;
}

.terms-link:hover {
    color: #764ba2;
    text-decoration: underline;
}

.login-btn {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: 8px;
    color: white;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

.login-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.btn-loader {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.login-footer {
    text-align: center;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.login-footer p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.85rem;
}

.login-success {
    text-align: center;
    padding: 2rem;
}

.success-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #4caf50 0%, #45a049 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin: 0 auto 1.5rem;
    animation: successPulse 0.6s ease-out;
}

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

.login-success h4 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #4caf50;
}

.login-success p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.login-success p:last-of-type {
    font-weight: 600;
    color: #667eea;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        padding: 1rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .btn {
        padding: 0.875rem 1.5rem;
        font-size: 0.875rem;
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .download-btn {
        width: 100%;
        max-width: 320px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .phone-frame {
        width: 250px;
        height: 500px;
    }
    
    .container {
        padding: 0 1rem;
    }
    
    .modal-content {
        margin: 5% auto;
        width: 95%;
    }
    
    .login-form {
        padding: 0 1rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .download-title {
        font-size: 2rem;
    }
    
    .download-subtitle {
        font-size: 1rem;
    }
}

/* ===== Responsive Design for Mobile ===== */
@media (max-width: 768px) {
    .container, .nav-container {
        padding: 1rem;
    }

    .logo {
        font-size: 1.2rem;
    }

    .logo-icon {
        width: 24px;
        height: 24px;
    }

    h1, h2, h3 {
        font-size: 1.5rem;
    }

    p {
        font-size: 1rem;
    }

    .button {
        padding: 0.5rem 1rem;
        font-size: 1rem;
    }
}