:root {
    --primary-color: #EF3B30;
    /* Cardinal Red */
    --accent-color: #2E9DDD;
    /* Sky Blue */
    --bg-dark: #ffffff;
    /* White background */
    --bg-darker: #f8f9fa;
    /* Light gray */
    --text-main: #000000;
    /* Black text */
    --text-muted: #555555;
    /* Dark gray for muted text */
    --glass-bg: rgba(46, 157, 221, 0.05);
    --glass-border: rgba(46, 157, 221, 0.15);
    --gradient-glow: radial-gradient(circle at 50% 50%, rgba(46, 157, 221, 0.1) 0%, rgba(255, 255, 255, 0) 70%);
}

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

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

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

/* Header */
header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 100;
    padding: 1.5rem 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(46, 157, 221, 0.1);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    object-fit: cover;
}

.nav-links a {
    color: var(--text-main);
    text-decoration: none;
    margin-left: 2rem;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

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

.bg-gradient {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-glow);
    z-index: -1;
    pointer-events: none;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.text-content h1 {
    font-size: 4rem;
    line-height: 1.1;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.text-content h1 span {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    max-width: 500px;
}

.btn {
    display: inline-flex;
    align-items: center;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary {
    background: var(--primary-color);
    color: #ffffff;
    box-shadow: 0 4px 20px rgba(239, 59, 48, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(239, 59, 48, 0.4);
    background: #d63329;
    /* Slightly darker red on hover */
}

.btn .icon {
    margin-right: 0.5rem;
    font-size: 0.9em;
}

/* Screenshot Display */
.phone-placeholder {
    width: 100%;
    max-width: 350px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Screenshot styling */
.screen-content {
    width: 100%;
    height: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}

.splash-screen {
    justify-content: center;
    align-items: center;
    width: 100%;
}

.splash-logo {
    width: 100%;
    height: auto;
    object-fit: contain;
    border-radius: 55px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
    z-index: 10;
    margin-top: 12px;
}

.app-ui-mockup {
    display: none;
}

.mock-header {
    display: none;
}

.mock-bird-card {
    display: none;
}

.mock-lines {
    display: none;
}

.mock-play-btn {
    display: none;
}

/* Features Section */
.features {
    padding: 8rem 0;
    position: relative;
    background: var(--bg-darker);
}

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

.feature-card {
    padding: 2.5rem;
    border-radius: 20px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    transition: transform 0.3s ease, background 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.08);
}

.icon-wrapper {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-main);
}

.feature-card p {
    color: var(--text-muted);
}

/* Footer */
footer {
    padding: 4rem 0;
    border-top: 1px solid var(--glass-border);
    text-align: center;
    background: var(--bg-darker);
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
    color: var(--text-muted);
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
}

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

.play-store-badge {
    width: 200px;
    height: auto;
}

/* Responsive */
@media (max-width: 768px) {
    .text-content h1 {
        font-size: 3rem;
    }

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

    .subtitle {
        margin: 0 auto 2rem auto;
    }

    .cta-group {
        justify-content: center;
    }

    .phone-placeholder {
        max-width: 280px;
    }

    .logo {
        font-size: 1.25rem;
    }

    .logo-icon {
        width: 32px;
        height: 32px;
    }
}