/* 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: #333;
    background-color: #f8f9fa;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: 1rem;
    color: #666;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
    color: #1db954;
    font-weight: 700;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, #1db954, #1ed760);
    color: white;
    box-shadow: 0 4px 15px rgba(29, 185, 84, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(29, 185, 84, 0.4);
}

.btn-secondary {
    background: #ffffff;
    color: #1db954;
    border: 2px solid #1db954;
}

.btn-secondary:hover {
    background: #1db954;
    color: white;
}

.btn-outline {
    background: transparent;
    color: #1db954;
    border: 2px solid #1db954;
}

.btn-outline:hover {
    background: #1db954;
    color: white;
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.1rem;
}

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: #1db954;
}

.nav-logo i {
    font-size: 2rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: #1db954;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: #1db954;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    overflow: hidden;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 1.5rem;
    opacity: 0.9;
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: #ffffff;
    font-weight: 500;
    line-height: 1.6;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

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

.phone-mockup {
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-screen {
    width: 280px;
    height: 500px;
    background: #000;
    border-radius: 30px;
    padding: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.spotify-app {
    background: #121212;
    height: 100%;
    border-radius: 20px;
    padding: 20px;
    color: white;
}

.app-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 30px;
}

.app-header i {
    color: #1db954;
    font-size: 1.5rem;
}

.song-info {
    text-align: center;
}

.album-art {
    width: 120px;
    height: 120px;
    background: linear-gradient(45deg, #1db954, #1ed760);
    border-radius: 10px;
    margin: 0 auto 20px;
}

.song-details h4 {
    margin-bottom: 10px;
    color: #1db954;
}

.song-details p {
    color: #b3b3b3;
    font-size: 0.9rem;
}

/* Features Preview */
.features-preview {
    padding: 80px 0;
    background: white;
}

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

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #1db954, #1ed760);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 2rem;
}

.feature-card h3 {
    color: #333;
    margin-bottom: 1rem;
}

.feature-card p {
    color: #666;
    line-height: 1.6;
}

/* Download Section */
.download-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #1db954, #1ed760);
    color: white;
    text-align: center;
}

.download-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.download-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: #ffffff;
    font-weight: 600;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.download-info {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.1rem;
}

.info-item i {
    font-size: 1.5rem;
    opacity: 0.8;
}

/* Why Choose Section */
.why-choose {
    padding: 80px 0;
    background: white;
}

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

.benefit-item {
    text-align: center;
    padding: 2rem;
}

.benefit-icon {
    width: 70px;
    height: 70px;
    background: #f8f9fa;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: #1db954;
    font-size: 1.8rem;
}

.benefit-item h3 {
    color: #333;
    margin-bottom: 1rem;
}

.benefit-item p {
    color: #666;
    line-height: 1.6;
}

/* Trust Indicators */
.trust-indicators {
    padding: 60px 0;
    background: #f8f9fa;
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.trust-item {
    text-align: center;
    padding: 2rem;
}

.trust-number {
    font-size: 3rem;
    font-weight: 700;
    color: #1db954;
    margin-bottom: 0.5rem;
}

.trust-label {
    font-size: 1.1rem;
    color: #666;
    font-weight: 500;
}

/* Footer */
.footer {
    background: #1a1a1a;
    color: white;
    padding: 60px 0 20px;
}

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

.footer-section h3 {
    color: #1db954;
    margin-bottom: 1rem;
}

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

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

.footer-section ul li a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #1db954;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: #333;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: background 0.3s ease;
}

.social-links a:hover {
    background: #1db954;
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 2rem;
    text-align: center;
}

.footer-bottom p {
    color: #999;
    margin-bottom: 0.5rem;
}

.disclaimer {
    font-size: 0.9rem;
    color: #666;
}

/* Page Header */
.page-header {
    padding: 120px 0 60px;
    background: linear-gradient(135deg, #1db954, #1ed760);
    color: white;
    text-align: center;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* Download Page Specific Styles */
.latest-version {
    padding: 60px 0;
    background: white;
}

.version-card {
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    padding: 2rem;
    margin-bottom: 2rem;
}

.version-card.featured {
    border: 3px solid #1db954;
    position: relative;
}

.version-badge {
    position: absolute;
    top: -15px;
    left: 2rem;
    background: #1db954;
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

.version-header h2 {
    color: #333;
    margin-bottom: 0.5rem;
}

.version-date {
    color: #666;
    font-size: 0.9rem;
}

.version-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin: 2rem 0;
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #666;
}

.detail-item i {
    color: #1db954;
    width: 20px;
}

.version-features {
    margin: 2rem 0;
}

.version-features h3 {
    color: #333;
    margin-bottom: 1rem;
}

.version-features ul {
    list-style: none;
    padding-left: 0;
}

.version-features li {
    padding: 0.5rem 0;
    color: #666;
    position: relative;
    padding-left: 1.5rem;
}

.version-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #1db954;
    font-weight: bold;
}

.download-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

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

/* Installation Guide */
.installation-guide {
    padding: 60px 0;
    background: #f8f9fa;
}

.guide-steps {
    display: grid;
    gap: 2rem;
}

.step {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
}

.step-number {
    width: 50px;
    height: 50px;
    background: #1db954;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content h3 {
    color: #333;
    margin-bottom: 1rem;
}

.step-content p {
    color: #666;
    margin-bottom: 1rem;
}

.step-content ol {
    padding-left: 1.5rem;
    margin-bottom: 1rem;
}

.step-content li {
    margin-bottom: 0.5rem;
    color: #666;
}

/* System Requirements */
.system-requirements {
    padding: 60px 0;
    background: white;
}

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

.requirement-item {
    text-align: center;
    padding: 2rem;
}

.requirement-icon {
    width: 70px;
    height: 70px;
    background: #f8f9fa;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: #1db954;
    font-size: 1.8rem;
}

.requirement-item h3 {
    color: #333;
    margin-bottom: 1rem;
}

.requirement-item p {
    color: #666;
}

/* Download Tips */
.download-tips {
    padding: 60px 0;
    background: #f8f9fa;
}

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

.tip-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    text-align: center;
}

.tip-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #1db954, #1ed760);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 1.8rem;
}

.tip-card h3 {
    color: #333;
    margin-bottom: 1rem;
}

.tip-card p {
    color: #666;
}

/* Features Page Specific Styles */
.features-overview {
    padding: 60px 0;
    background: linear-gradient(135deg, #1db954, #1ed760);
    color: white;
    text-align: center;
}

.overview-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.overview-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.core-features {
    padding: 80px 0;
    background: white;
}

.feature-card.large {
    text-align: left;
    padding: 2.5rem;
}

.feature-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.feature-icon.primary {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #1db954, #1ed760);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.feature-benefits {
    list-style: none;
    padding-left: 0;
    margin-top: 1rem;
}

.feature-benefits li {
    padding: 0.5rem 0;
    color: #666;
    position: relative;
    padding-left: 1.5rem;
}

.feature-benefits li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #1db954;
    font-weight: bold;
}

.advanced-features {
    padding: 80px 0;
    background: #f8f9fa;
}

.feature-comparison {
    padding: 80px 0;
    background: white;
}

.comparison-table {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.comparison-header {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    background: #1db954;
    color: white;
    font-weight: 600;
}

.comparison-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    border-bottom: 1px solid #eee;
}

.comparison-cell {
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.comparison-header .comparison-cell {
    justify-content: center;
    font-weight: 600;
}

.comparison-row:nth-child(even) {
    background: #f8f9fa;
}

.text-success {
    color: #1db954;
}

.text-danger {
    color: #dc3545;
}

.user-experience {
    padding: 80px 0;
    background: #f8f9fa;
}

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

.experience-item {
    text-align: center;
    padding: 2rem;
}

.experience-icon {
    width: 70px;
    height: 70px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: #1db954;
    font-size: 1.8rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.cta-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #1db954, #1ed760);
    color: white;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* FAQ Page Specific Styles */
.quick-help {
    padding: 60px 0;
    background: white;
}

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

.help-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: transform 0.3s ease;
}

.help-card:hover {
    transform: translateY(-5px);
}

.help-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #1db954, #1ed760);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 1.8rem;
}

.help-card h3 {
    color: #333;
    margin-bottom: 1rem;
}

.help-card p {
    color: #666;
    margin-bottom: 1.5rem;
}

.installation-guide-detailed {
    padding: 60px 0;
    background: #f8f9fa;
}

.guide-container {
    display: grid;
    gap: 2rem;
}

.guide-step {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.step-number {
    width: 60px;
    height: 60px;
    background: #1db954;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content h3 {
    color: #333;
    margin-bottom: 1rem;
}

.step-content p {
    color: #666;
    margin-bottom: 1rem;
}

.step-content ol {
    padding-left: 1.5rem;
    margin-bottom: 1rem;
}

.step-content li {
    margin-bottom: 0.5rem;
    color: #666;
}

.warning-box, .info-box, .success-box {
    padding: 1rem;
    border-radius: 8px;
    margin-top: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.warning-box {
    background: #fff3cd;
    color: #856404;
    border: 1px solid #ffeaa7;
}

.info-box {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

.success-box {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.troubleshooting {
    padding: 60px 0;
    background: white;
}

.troubleshooting-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.trouble-item {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 16px;
    border-left: 4px solid #1db954;
}

.trouble-item h3 {
    color: #333;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.trouble-item h3 i {
    color: #ffc107;
}

.trouble-item p {
    color: #666;
    margin-bottom: 1rem;
}

.trouble-item ol {
    padding-left: 1.5rem;
}

.trouble-item li {
    margin-bottom: 0.5rem;
    color: #666;
}

.general-faq {
    padding: 60px 0;
    background: #f8f9fa;
}

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

.faq-item {
    background: white;
    border-radius: 16px;
    margin-bottom: 1rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    overflow: hidden;
}

.faq-question {
    padding: 2rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s ease;
}

.faq-question:hover {
    background: #f8f9fa;
}

.faq-question h3 {
    margin-bottom: 0;
    color: #333;
}

.faq-question i {
    color: #1db954;
    transition: transform 0.3s ease;
}

.faq-answer {
    padding: 0 2rem 2rem;
    border-top: 1px solid #eee;
}

.faq-answer p {
    color: #666;
    margin-bottom: 0;
}

.contact-support {
    padding: 60px 0;
    background: white;
}

.contact-content {
    text-align: center;
    margin-bottom: 3rem;
}

.contact-content p {
    font-size: 1.2rem;
    color: #666;
}

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

.contact-method {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
}

.contact-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #1db954, #1ed760);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 1.8rem;
}

.contact-method h3 {
    color: #333;
    margin-bottom: 1rem;
}

.contact-method p {
    color: #666;
    margin-bottom: 1.5rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .download-info {
        flex-direction: column;
        gap: 1rem;
    }

    .guide-step {
        flex-direction: column;
        text-align: center;
    }

    .step-number {
        margin: 0 auto;
    }

    .comparison-table {
        font-size: 0.9rem;
    }

    .comparison-header,
    .comparison-row {
        grid-template-columns: 1fr;
    }

    .comparison-cell {
        padding: 0.5rem;
        font-size: 0.9rem;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .feature-card,
    .version-card,
    .help-card {
        padding: 1.5rem;
    }

    .phone-screen {
        width: 250px;
        height: 450px;
    }
}