:root {
    --bg-color: #ffffff;
    --text-main: #191919;
    --text-muted: #656565;
    --border-color: #f0f0f0;
    --hover-bg: #f7f7f7;
    --primary: #02c373; /* Pixabay green */
    --primary-hover: #02a15f;
    --nav-bg: #ffffff;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* Top Navigation */
.top-nav {
    border-bottom: 1px solid var(--border-color);
    padding: 0.5rem 1.5rem;
    position: sticky;
    top: 0;
    background: var(--nav-bg);
    z-index: 100;
}

.nav-content {
    display: flex;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    gap: 2rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}
.logo span {
    font-weight: 400;
}

.search-bar {
    flex-grow: 1;
    display: flex;
    align-items: center;
    background: #f4f4f4;
    border-radius: 24px;
    padding: 0.5rem 1rem;
    gap: 0.5rem;
    max-width: 600px;
}

.search-bar input {
    border: none;
    background: transparent;
    width: 100%;
    font-size: 0.95rem;
    color: var(--text-main);
    outline: none;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-left: auto;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-main);
    font-weight: 600;
    font-size: 0.95rem;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
    border: none;
    border-radius: 24px;
    padding: 0.6rem 1.25rem;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    transition: background 0.2s;
}

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

/* Main Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem 1.5rem;
}

.page-header {
    margin-bottom: 1.5rem;
}

.page-header h1 {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-muted);
}

/* Category Sections */
.category-section {
    margin-bottom: 1.5rem;
}

.category-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 0.25rem;
    cursor: pointer;
}

.category-header h2 {
    font-size: 1.15rem;
    font-weight: 600;
}

.category-header svg {
    transition: transform 0.3s;
}

.category-section.open .category-header svg {
    transform: rotate(180deg);
}

.category-tracks {
    display: none;
}

.category-section.open .category-tracks {
    display: block;
}

/* Track Row */
.track-row {
    display: flex;
    align-items: center;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    gap: 1rem;
    transition: background-color 0.2s;
    cursor: pointer;
}

.track-row:hover {
    background-color: var(--hover-bg);
}

.track-thumb {
    width: 38px;
    height: 38px;
    border-radius: 6px;
    position: relative;
    flex-shrink: 0;
    background-size: cover;
    background-position: center;
}

.track-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 28px;
    height: 28px;
    background: rgba(0,0,0,0.6);
    border-radius: 50%;
    display: none; /* hidden by default */
    align-items: center;
    justify-content: center;
}

.track-row:hover .track-play-btn {
    display: flex;
}

.track-info {
    width: 200px;
    flex-shrink: 0;
}

.track-title {
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.1rem;
    color: var(--text-main);
}

.track-subtitle {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.track-waveform {
    flex-grow: 1;
    height: 24px;
    background-color: transparent;
    position: relative;
    display: flex;
    align-items: center;
}

/* Fake waveform using repeating linear gradient */
.track-waveform-img {
    width: 100%;
    height: 100%;
    background-image: repeating-linear-gradient(to right, #ccc 0, #ccc 2px, transparent 2px, transparent 4px);
    opacity: 0.6;
    mask-image: linear-gradient(to right, black 50%, transparent 100%);
    -webkit-mask-image: linear-gradient(to bottom, transparent, black 20%, black 80%, transparent);
}

.track-duration {
    font-size: 0.85rem;
    color: var(--text-muted);
    width: 40px;
    text-align: right;
}