:root {
    --bg-color: #000000;
    --surface-color: #121212;
    --text-primary: #FFFFFF;
    --text-secondary: #B3B3B3;
    --accent-color: #FFFFFF;
    /* Pure white accent for extreme minimalism */
    --border-color: #282828;
}

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

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

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 5%;
    position: absolute;
    width: 100%;
    z-index: 10;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -1px;
}

.links a {
    color: var(--text-primary);
    text-decoration: none;
    margin-left: 2rem;
    font-weight: 600;
}

.btn-primary {
    background: var(--accent-color);
    padding: 0.8rem 1.8rem;
    border-radius: 4px;
    /* More angular, modern feel */
    color: black !important;
    text-decoration: none;
    font-weight: 700;
    transition: background 0.2s;
}

.btn-primary:hover {
    background: #e0e0e0;
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 10%;
}

.hero-content {
    flex: 1;
    padding-right: 4rem;
}

.hero h1 {
    font-size: 4rem;
    line-height: 1;
    margin-bottom: 2rem;
    font-weight: 800;
}

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

.cta-group {
    display: flex;
    gap: 1.5rem;
}

.btn-secondary {
    padding: 0.8rem 1.8rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    text-decoration: none;
    transition: background 0.3s;
}

.btn-secondary:hover {
    background: var(--surface-color);
}

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

/* Updated Phone Mockup for Android UI Accuracy */
.phone-mockup {
    width: 280px;
    height: 580px;
    background: #000;
    border-radius: 36px;
    border: 10px solid #1a1a1a;
    position: relative;
    box-shadow: 0 40px 80px rgba(0, 0, 0, 0.8);
    overflow: hidden;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--bg-color);
    padding: 24px 20px;
    display: flex;
    flex-direction: column;
}

.status-bar {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    margin-bottom: 30px;
    color: var(--text-primary);
    font-weight: 600;
}

.status-icons {
    display: flex;
    gap: 6px;
}

.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.app-header span {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1.5px;
    color: var(--text-secondary);
}

.album-art-placeholder {
    width: 100%;
    aspect-ratio: 1;
    background: #1a1a1a;
    border-radius: 12px;
    margin-bottom: 40px;
}

.art-solid {
    width: 100%;
    height: 100%;
    background: #2a2a2a;
    /* Solid color art */
}

.track-info {
    margin-bottom: 24px;
}

.track-title {
    font-size: 22px;
    font-weight: 800;
    margin-bottom: 4px;
}

.track-artist {
    color: var(--text-secondary);
    font-size: 15px;
}

.progress-container {
    margin-bottom: 40px;
}

.progress-bar {
    height: 4px;
    background: #282828;
    border-radius: 2px;
    margin-bottom: 12px;
    position: relative;
}

.progress-current {
    width: 40%;
    height: 100%;
    background: var(--text-primary);
}

.time-labels {
    display: flex;
    justify-content: space-between;
    font-size: 11px;
    color: var(--text-secondary);
}

.controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 10px;
}

.play-btn {
    width: 72px;
    height: 72px;
    background: var(--text-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.play-btn .material-icons {
    color: black !important;
    font-size: 40px !important;
}

.control-btn {
    font-size: 36px !important;
    color: var(--text-primary);
}

.features {
    padding: 8rem 10%;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 4rem;
    border-top: 1px solid var(--border-color);
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

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

.download-container {
    min-height: 80vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.download-box {
    background: var(--surface-color);
    padding: 4rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    margin-top: 3rem;
}

footer {
    padding: 4rem 10%;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

@media (max-width: 968px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 120px 5% 60px;
    }

    .hero-content {
        padding-right: 0;
        margin-bottom: 4rem;
    }

    .hero h1 {
        font-size: 3rem;
    }

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