:root {
    --bg-color: #0d1117;
    --surface-color: #161b22;
    --primary: #00E5FF;
    --primary-glow: rgba(0, 229, 255, 0.4);
    --alert: #FF2D55;
    --alert-glow: rgba(255, 45, 85, 0.4);
    --text-main: #f0f6fc;
    --text-muted: #8b949e;
}

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

html {
    scroll-behavior: smooth;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    overflow-x: hidden;
}

body {
    overflow-x: hidden;
    line-height: 1.6;
}

/* Glassmorphism Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1.5rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    background: rgba(13, 17, 23, 0.7);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo span {
    background: linear-gradient(135deg, var(--primary), #0072FF);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

.nav-links a {
    color: var(--text-main);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--primary);
}

.cta-btn {
    background: linear-gradient(135deg, var(--primary), #00A3FF);
    color: #000 !important;
    padding: 0.6rem 1.5rem;
    border-radius: 30px;
    font-weight: 600 !important;
    transition: transform 0.3s, box-shadow 0.3s !important;
}

.cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px var(--primary-glow);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 0 5%;
    padding-top: 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -20%;
    left: -10%;
    width: 50%;
    height: 50%;
    background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
    filter: blur(100px);
    z-index: -1;
}

.hero-content {
    flex: 1;
    max-width: 600px;
    z-index: 10;
}

.badge {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: rgba(0, 229, 255, 0.1);
    border: 1px solid rgba(0, 229, 255, 0.2);
    color: var(--primary);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero h1 {
    font-size: 4rem;
    line-height: 1.1;
    font-weight: 800;
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    max-width: 90%;
}

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

.btn {
    padding: 1rem 2rem;
    border-radius: 30px;
    font-weight: 600;
    text-decoration: none;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--text-main);
    color: var(--bg-color);
}

.btn-primary:hover {
    background: var(--primary);
    box-shadow: 0 10px 25px var(--primary-glow);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: var(--text-main);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--text-main);
}

.hero-image {
    flex: 1;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image img {
    width: 100%;
    max-width: 550px;
    z-index: 2;
    border-radius: 30px;
    box-shadow: 0 30px 60px rgba(0,0,0,0.5);
    animation: float 6s ease-in-out infinite;
}

/* Floating status card */
.status-card {
    position: absolute;
    background: rgba(22, 27, 34, 0.8);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1rem 1.5rem;
    border-radius: 16px;
    display: flex;
    align-items: center;
    gap: 1rem;
    z-index: 3;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}

.status-card.heart {
    top: 15%;
    right: -5%;
    animation: float 5s ease-in-out infinite alternate;
}

.status-card.alert {
    bottom: 20%;
    left: 0;
    animation: float 7s ease-in-out infinite alternate-reverse;
}

.status-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.2rem;
}

.heart .status-icon {
    background: rgba(255, 45, 85, 0.2);
    color: var(--alert);
    animation: beat 1s infinite;
}

.alert .status-icon {
    background: rgba(0, 229, 255, 0.2);
    color: var(--primary);
}

.status-info h4 {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
}

.status-info p {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-main);
    margin: 0;
}

/* Sections */
section {
    padding: 6rem 5%;
}

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

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

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

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

.feature-card {
    background: var(--surface-color);
    border: 1px solid rgba(255, 255, 255, 0.03);
    border-radius: 24px;
    padding: 2.5rem;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: rgba(0, 229, 255, 0.3);
    box-shadow: 0 20px 40px rgba(0, 229, 255, 0.05);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    display: inline-block;
    background: -webkit-linear-gradient(135deg, var(--primary), #00A3FF);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* App Overview Section */
.app-section {
    display: flex;
    align-items: center;
    gap: 4rem;
    background: linear-gradient(to right, rgba(22, 27, 34, 0.5), transparent);
    border-radius: 30px;
    padding: 4rem;
    margin: 2rem 5%;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.app-text {
    flex: 1;
}

.app-text h2 {
    font-size: 2.8rem;
    margin-bottom: 1.5rem;
}

.app-list {
    list-style: none;
    margin-top: 2rem;
}

.app-list li {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.list-icon {
    background: rgba(0, 229, 255, 0.1);
    color: var(--primary);
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-shrink: 0;
    margin-top: 3px;
}

.app-list div h4 {
    font-size: 1.1rem;
    margin-bottom: 0.3rem;
}

.app-list div p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.app-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.app-image img {
    max-width: 320px;
    border-radius: 40px;
    box-shadow: 0 30px 60px rgba(0,0,0,0.6), 0 0 0 10px #161b22;
}

/* Footer */
footer {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 4rem 5% 2rem;
    text-align: center;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 800;
}

.footer-text {
    color: var(--text-muted);
    max-width: 400px;
}

.copyright {
    color: rgba(255,255,255,0.3);
    font-size: 0.9rem;
}

/* Animations & Utilities */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

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

@keyframes beat {
    0%, 100% { transform: scale(1); }
    25% { transform: scale(1.1); }
    50% { transform: scale(1); }
    75% { transform: scale(1.2); }
}

/* Responsive */
@media (max-width: 992px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 120px;
    }
    .hero-content {
        margin-bottom: 3rem;
    }
    .hero h1 { font-size: 3rem; }
    .hero p { margin: 0 auto 2rem; }
    .hero-buttons { justify-content: center; }
    
    .status-card.heart { right: -10px; top: 10%; }
    .status-card.alert { left: -10px; bottom: 10%; }
    
    .app-section {
        flex-direction: column;
        padding: 2.5rem;
    }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .hero h1 { font-size: 2.5rem; }
    .features-grid { grid-template-columns: 1fr; }
}