@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;700;800&display=swap');

:root {
    --background-dark: #121212;
    --surface-dark: #1e1e1e;
    --primary-accent: #1DB954; /* Spotify Green */
    --secondary-accent: #f0939d; /* Light Pink */
    --text-light: #ffffff;
    --text-medium: #b3b3b3;
    --border-dark: #282828;
}

body {
    font-family: 'Nunito', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--background-dark);
    color: var(--text-light);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 1rem;
    box-sizing: border-box;
}

.container {
    background-color: var(--surface-dark);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.5);
    width: 100%;
    max-width: 550px;
    text-align: center;
    border: 1px solid var(--border-dark);
}

.error-message {
    color: #D8000C;
    background-color: #FFD2D2;
    border: 1px solid #D8000C;
    padding: 0.75rem;
    margin-bottom: 1.5rem;
    border-radius: 8px;
    text-align: center;
    font-weight: bold;
}

h1, h2 {
    color: var(--primary-accent);
    font-weight: 800;
}

h2 {
    margin-bottom: 1rem;
    color: var(--text-light);
}

.search-container {
    display: flex;
    margin-bottom: 1.5rem;
}

#searchInput {
    flex-grow: 1;
    border: 2px solid var(--border-dark);
    background-color: #282828;
    color: var(--text-light);
    padding: 0.75rem 1rem;
    border-radius: 8px 0 0 8px;
    font-size: 1rem;
    font-family: 'Nunito', sans-serif;
}

#searchInput:focus {
    outline: none;
    border-color: var(--primary-accent);
    box-shadow: 0 0 0 3px hsla(141, 76%, 42%, 0.3);
}

#searchButton {
    background-color: var(--primary-accent);
    color: var(--background-dark);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 0 8px 8px 0;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 700;
    transition: background-color 0.2s;
}

#searchButton:hover {
    background-color: #1ed760;
}

#resultsContainer {
    text-align: left;
    margin-top: 1.5rem;
}

.scrollable-list {
    max-height: 300px;
    overflow-y: auto;
    border: 2px solid var(--border-dark);
    border-radius: 8px;
    padding: 0.5rem;
    background-color: var(--background-dark);
}

.track-item {
    display: flex;
    align-items: center;
    padding: 0.75rem;
    border-radius: 6px;
    transition: background-color 0.2s;
}

.track-item:not(:last-child) {
    border-bottom: 1px solid var(--border-dark);
}

.track-item:hover {
    background-color: #282828;
}

.album-art {
    width: 50px;
    height: 50px;
    border-radius: 4px;
    margin-right: 1rem;
    object-fit: cover;
    flex-shrink: 0;
}

.track-info {
    flex-grow: 1;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.track-name {
    font-weight: 700;
    text-overflow: ellipsis;
    overflow: hidden;
    color: var(--text-light);
}

.track-artist {
    color: var(--text-medium);
    font-size: 0.9rem;
    text-overflow: ellipsis;
    overflow: hidden;
}

.add-button {
    background-color: var(--secondary-accent);
    color: var(--background-dark);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 700;
    transition: background-color 0.2s;
    margin-left: 1rem;
    flex-shrink: 0;
}

.add-button:hover {
    background-color: #ffb1ba;
}

#playlist-container {
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 2px solid var(--border-dark);
}

.add-button.added {
    background-color: #535353;
    color: var(--text-medium);
    cursor: default;
}

.home-button {
    display: inline-block;
    margin-top: 2rem;
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--primary-accent);
    color: var(--primary-accent);
    background-color: transparent;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 700;
    transition: all 0.2s;
}

.home-button:hover {
    background-color: var(--primary-accent);
    color: var(--background-dark);
}

/* Spinner for loading state */
.hidden {
    display: none;
}

.spinner {
    border: 4px solid rgba(255, 255, 255, 0.1);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border-left-color: var(--primary-accent);
    margin: 2rem auto;
    animation: spin 1s ease infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}