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

body {
    font-family: 'Inter', sans-serif;
    background: #000;
    color: #fff;
    line-height: 1.6;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-img {
    height: 40px;
    width: auto;
    transition: transform 0.3s ease;
}

.logo-img:hover {
    transform: scale(1.05);
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #00f5ff, #0080ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

.nav-links a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #00f5ff;
}

.btn-nav {
    background: linear-gradient(135deg, #00f5ff, #0080ff);
    padding: 0.5rem 1.5rem;
    border-radius: 25px;
    color: #000 !important;
    font-weight: 600;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: radial-gradient(ellipse at center, #001122 0%, #000 70%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(0, 245, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0, 128, 255, 0.1) 0%, transparent 50%);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 0.8; }
}

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

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.highlight {
    display: block;
    background: linear-gradient(135deg, #00f5ff, #0080ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: #aaa;
    margin-bottom: 2rem;
    max-width: 500px;
}

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

.btn-primary, .btn-secondary {
    padding: 1rem 2rem;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-primary {
    background: linear-gradient(135deg, #00f5ff, #0080ff);
    color: #000;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 245, 255, 0.3);
}

.btn-secondary {
    background: transparent;
    color: #fff;
    border: 2px solid #333;
}

.btn-secondary:hover {
    border-color: #00f5ff;
    color: #00f5ff;
}

/* Device Container */
.device-container {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 3rem;
}

.phone-device, .watch-device {
    position: relative;
    background: linear-gradient(145deg, #222, #111);
    border-radius: 20px;
    padding: 1rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
    animation: float 6s ease-in-out infinite;
}

.phone-device {
    width: 180px;
    height: 360px;
}

.watch-device {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    animation-delay: 1s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-15px); }
}

.device-screen {
    width: 100%;
    height: 100%;
    background: #000;
    border-radius: inherit;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.app-interface {
    text-align: center;
    color: #fff;
}

.workout-timer, .watch-timer {
    font-size: 2rem;
    font-weight: 700;
    color: #00f5ff;
    margin-bottom: 0.5rem;
}

.watch-timer {
    font-size: 1.2rem;
}

.workout-phase, .watch-phase {
    font-size: 0.9rem;
    color: #aaa;
    margin-bottom: 1rem;
}

.workout-stats {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: #ccc;
}

.sync-line {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 2px;
    background: linear-gradient(90deg, transparent, #00f5ff, transparent);
    animation: sync 2s ease-in-out infinite;
}

@keyframes sync {
    0%, 100% { opacity: 0; transform: translate(-50%, -50%) scaleX(0); }
    50% { opacity: 1; transform: translate(-50%, -50%) scaleX(1); }
}

/* Features Section */
.features {
    padding: 8rem 0;
    background: #111;
}

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

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-header p {
    color: #aaa;
    font-size: 1.1rem;
}

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

.feature-card {
    background: linear-gradient(145deg, #1a1a1a, #0a0a0a);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    border: 1px solid #333;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: #00f5ff;
    box-shadow: 0 15px 30px rgba(0, 245, 255, 0.1);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.feature-card p {
    color: #aaa;
}

/* Support Section */
.support {
    padding: 6rem 0;
    background: linear-gradient(135deg, #001a2e, #002a4e);
    text-align: center;
}

.support-content {
    max-width: 600px;
    margin: 0 auto;
}

.support h2 {
    font-size: 2.2rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #00f5ff, #0080ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.support p {
    font-size: 1.1rem;
    color: #ccc;
    line-height: 1.6;
    margin-bottom: 2rem;
}

.support-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, #00f5ff, #0080ff);
    color: #000;
    padding: 1rem 2rem;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 245, 255, 0.2);
}

.support-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(0, 245, 255, 0.4);
}

.support-icon {
    font-size: 1.2rem;
}

/* Download Section */
.download {
    padding: 8rem 0;
    background: linear-gradient(135deg, #001122, #000);
    text-align: center;
}

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

.download p {
    color: #aaa;
    margin-bottom: 3rem;
}

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

.download-card {
    background: linear-gradient(145deg, #1a1a1a, #0a0a0a);
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid #333;
    transition: all 0.3s ease;
}

.download-card:hover {
    border-color: #00f5ff;
    transform: translateY(-5px);
}

.download-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.download-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.download-btn {
    background: linear-gradient(135deg, #00f5ff, #0080ff);
    color: #000;
    padding: 1rem 2rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    display: inline-block;
    transition: all 0.3s ease;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 245, 255, 0.3);
}

/* Footer */
.footer {
    background: #0a0a0a;
    padding: 4rem 0 2rem;
    border-top: 1px solid #333;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-brand .logo {
    margin-bottom: 1rem;
}

.footer-brand p {
    color: #aaa;
    margin-top: 0.5rem;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.footer-section h4 {
    color: #fff;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.footer-section a {
    display: block;
    color: #aaa;
    text-decoration: none;
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #00f5ff;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #333;
    color: #666;
}

.footer-bottom a {
    color: #00f5ff;
    text-decoration: none;
}

.footer-bottom a:hover {
    text-decoration: underline;
}

/* Privacy Policy */
.privacy-policy {
    padding: 8rem 0 4rem;
    background: #111;
    min-height: 100vh;
}

.policy-content {
    max-width: 800px;
    margin: 0 auto;
}

.policy-content h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #fff;
}

.last-updated {
    color: #aaa;
    margin-bottom: 3rem;
    font-style: italic;
}

.policy-section {
    margin-bottom: 2.5rem;
}

.policy-section h2 {
    font-size: 1.5rem;
    color: #00f5ff;
    margin-bottom: 1rem;
}

.policy-section p {
    color: #ccc;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.policy-section ul {
    color: #ccc;
    line-height: 1.6;
    margin-left: 1.5rem;
}

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

.policy-section a {
    color: #00f5ff;
    text-decoration: none;
}

.policy-section a:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .device-container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .nav-links {
        gap: 1rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}