/* Download Page Styles */
:root {
    --primary-color: #00d4ff;
    --secondary-color: #ff6b35;
    --accent-color: #7c3aed;
    --bg-primary: #0a0a0f;
    --bg-secondary: #1a1a2e;
    --card-bg: rgba(255, 255, 255, 0.05);
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --border-color: rgba(255, 255, 255, 0.1);
    --gradient-primary: linear-gradient(135deg, #00d4ff, #00FFFF);
    --gradient-secondary: linear-gradient(135deg, #ff6b35, #f59e0b);
}

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

body {
    font-family: 'Montserrat', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Download Hero Section */
.download-hero {
    position: relative;
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-top: 80px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.stars {
    position: absolute;
    width: 100%;
    height: 100%;
    background: transparent;
}

.stars::before,
.stars::after {
    content: '';
    position: absolute;
    width: 2px;
    height: 2px;
    background: white;
    border-radius: 50%;
    box-shadow: 
        25px 50px 0 white,
        75px 25px 0 white,
        150px 75px 0 white,
        200px 25px 0 white,
        300px 100px 0 white,
        400px 50px 0 white,
        500px 125px 0 white,
        600px 75px 0 white,
        700px 25px 0 white,
        800px 100px 0 white,
        900px 50px 0 white,
        1000px 125px 0 white;
    animation: twinkle 3s infinite;
}

.stars::after {
    animation-delay: 1.5s;
}

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

.grid-overlay {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 212, 255, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: grid-move 20s linear infinite;
}

@keyframes grid-move {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

.hero-container {
    text-align: center;
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2rem;
    line-height: 1.8;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 3rem;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Download Section */
.download-section {
    padding: 5rem 0;
    background: var(--bg-secondary);
}

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

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.download-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.download-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 20px 40px rgba(0, 212, 255, 0.2);
}

.card-header {
    padding: 2rem;
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.platform-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: white;
    margin-bottom: 1rem;
}

.platform-info h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.platform-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.platform-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
}

.platform-badge.recommended {
    background: var(--gradient-secondary);
    color: white;
}

.card-body {
    padding: 2rem;
}

.download-info {
    margin-bottom: 2rem;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 0.8rem;
    font-size: 0.9rem;
}

.info-item i {
    color: var(--primary-color);
    width: 16px;
}

.system-requirements {
    background: rgba(255, 255, 255, 0.03);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.system-requirements h4 {
    font-size: 1rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.system-requirements ul {
    list-style: none;
}

.system-requirements li {
    padding: 0.3rem 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
    position: relative;
    padding-left: 1rem;
}

.system-requirements li::before {
    content: '•';
    color: var(--primary-color);
    position: absolute;
    left: 0;
}

.card-footer {
    padding: 2rem;
    border-top: 1px solid var(--border-color);
}

.download-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    width: 100%;
    padding: 1rem 2rem;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.download-btn.primary {
    background: var(--gradient-primary);
    color: white;
}

.download-btn.secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 212, 255, 0.3);
}

/* Installation Guide */
.installation-guide {
    padding: 5rem 0;
    background: var(--bg-primary);
}

.guide-tabs {
    max-width: 800px;
    margin: 0 auto;
}

.guide-tabs input[type="radio"] {
    display: none;
}

.tab-labels {
    display: flex;
    justify-content: center;
    margin-bottom: 3rem;
    background: var(--card-bg);
    border-radius: 15px;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
}

.tab-label {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    padding: 1rem 2rem;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    color: var(--text-secondary);
}

.tab-label:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.guide-tabs input[type="radio"]:checked + .tab-labels .tab-label,
.guide-tabs input[type="radio"]:checked ~ .tab-labels .tab-label:nth-of-type(1) {
    background: var(--gradient-primary);
    color: white;
}

#tab-windows:checked ~ .tab-labels .tab-label:nth-of-type(1),
#tab-mac:checked ~ .tab-labels .tab-label:nth-of-type(2),
#tab-linux:checked ~ .tab-labels .tab-label:nth-of-type(3) {
    background: var(--gradient-primary);
    color: white;
}

.tab-content {
    position: relative;
}

.tab-panel {
    display: none;
    background: var(--card-bg);
    border-radius: 20px;
    padding: 3rem;
    border: 1px solid var(--border-color);
}

#tab-windows:checked ~ .tab-content #windows-guide,
#tab-mac:checked ~ .tab-content #mac-guide,
#tab-linux:checked ~ .tab-content #linux-guide {
    display: block;
    animation: fadeIn 0.5s ease-in-out;
}

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

.guide-steps {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.step {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.step-number {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
}

.step-content h4 {
    font-size: 1.2rem;
    margin-bottom: 0.8rem;
    color: var(--text-primary);
}

.step-content p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* FAQ Section */
.faq-section {
    padding: 5rem 0;
    background: var(--bg-secondary);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 1rem;
    background: var(--card-bg);
    border-radius: 15px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.faq-toggle {
    display: none;
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem 2rem;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.faq-question:hover {
    background: rgba(255, 255, 255, 0.05);
}

.faq-question i {
    transition: transform 0.3s ease;
    color: var(--primary-color);
}

.faq-toggle:checked + .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-toggle:checked ~ .faq-answer {
    max-height: 200px;
}

.faq-answer p {
    padding: 0 2rem 1.5rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Support Section */
.support-section {
    padding: 5rem 0;
    background: var(--bg-primary);
}

.support-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 3rem;
    background: var(--card-bg);
    border-radius: 20px;
    padding: 3rem;
    border: 1px solid var(--border-color);
}

.support-text h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.support-text p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.support-options {
    display: flex;
    gap: 1rem;
}

.support-btn {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 1rem 1.5rem;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.support-btn:not(.secondary) {
    background: var(--gradient-primary);
    color: white;
}

.support-btn.secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.support-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 212, 255, 0.3);
}

.support-image {
    font-size: 5rem;
    color: var(--primary-color);
    opacity: 0.7;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    padding: 3rem 0 1rem;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.footer-section h3 {
    font-size: 1.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-section p {
    color: var(--text-secondary);
    line-height: 1.6;
}

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

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

.footer-section ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .download-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .download-card {
        margin: 0 1rem;
    }
    
    .tab-labels {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .tab-label {
        padding: 0.8rem 1rem;
    }
    
    .tab-panel {
        padding: 2rem 1.5rem;
    }
    
    .step {
        flex-direction: column;
        text-align: center;
    }
    
    .support-content {
        flex-direction: column;
        text-align: center;
    }
    
    .support-options {
        flex-direction: column;
    }
    
    .support-btn {
        justify-content: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .container {
        padding: 0 15px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .card-header,
    .card-body,
    .card-footer {
        padding: 1.5rem;
    }
    
    .tab-panel {
        padding: 1.5rem 1rem;
    }
    
    .faq-question {
        padding: 1rem 1.5rem;
    }
    
    .faq-answer p {
        padding: 0 1.5rem 1rem;
    }
    
    .support-content {
        padding: 2rem 1.5rem;
    }
}

/* Loading Animation for Download Buttons */
.download-btn:active {
    transform: scale(0.98);
}

.download-btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.download-btn.loading {
    pointer-events: none;
    opacity: 0.7;
}

.download-btn.loading::after {
    opacity: 1;
}

.download-btn.loading span {
    opacity: 0;
}

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

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

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #00b8e6;
}

/* Selection color */
::selection {
    background: var(--primary-color);
    color: white;
}

::-moz-selection {
    background: var(--primary-color);
    color: white;
}