:root {
    --primary-color: #1DB954;
    --secondary-color: #191414;
    --text-primary: #FFFFFF;
    --text-secondary: #B3B3B3;
    --border-color: #282828;
    --bg-dark: #121212;
    --bg-light: #1E1E1E;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    background-color: var(--bg-light);
    border-bottom: 1px solid var(--border-color);
    padding: 20px 0;
    margin-bottom: 30px;
}

header h1 {
    color: var(--primary-color);
    font-size: 28px;
    margin-bottom: 5px;
}

header p {
    color: var(--text-secondary);
    font-size: 14px;
}

.card {
    background-color: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
}

.card h2 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 20px;
}

.form-group {
    margin-bottom: 15px;
}

label {
    display: block;
    margin-bottom: 5px;
    font-size: 14px;
    color: var(--text-secondary);
}

input, textarea {
    width: 100%;
    padding: 10px;
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    font-family: inherit;
}

input:focus, textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

button {
    background-color: var(--primary-color);
    color: var(--secondary-color);
    border: none;
    padding: 10px 20px;
    border-radius: 20px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s;
}

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

button:disabled {
    background-color: var(--text-secondary);
    cursor: not-allowed;
}

.button-group {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.playlist {
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 10px;
}

.playlist h3 {
    color: var(--primary-color);
    margin-bottom: 5px;
}

.playlist-meta {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 10px;
}

.status {
    display: inline-block;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 12px;
    margin-right: 10px;
}

.status.loading {
    background-color: #3e3e3e;
    color: var(--text-secondary);
}

.status.success {
    background-color: #1DB954;
    color: var(--secondary-color);
}

.status.error {
    background-color: #E74C3C;
    color: var(--text-primary);
}

.error-message {
    background-color: #E74C3C;
    color: var(--text-primary);
    padding: 10px;
    border-radius: 4px;
    margin-bottom: 15px;
}

.success-message {
    background-color: #1DB954;
    color: var(--secondary-color);
    padding: 10px;
    border-radius: 4px;
    margin-bottom: 15px;
}

#loading {
    text-align: center;
    padding: 20px;
    color: var(--text-secondary);
    display: none;
}

#loading.active {
    display: block;
}

@media (max-width: 768px) {
    .container {
        padding: 10px;
    }

    header h1 {
        font-size: 24px;
    }

    .button-group {
        flex-direction: column;
    }

    button {
        width: 100%;
    }
}

/* Auth styles */
#auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #121212 0%, #1DB954 100%);
}

.auth-wrapper {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.auth-card {
    background-color: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.auth-card h1 {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 10px;
    font-size: 28px;
}

.auth-card p {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 25px;
}

.auth-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 25px;
    border-bottom: 1px solid var(--border-color);
}

.auth-tab {
    flex: 1;
    background: none;
    color: var(--text-secondary);
    border: none;
    padding: 10px;
    border-bottom: 2px solid transparent;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.auth-tab:hover {
    background: none;
    color: var(--text-primary);
}

.auth-tab.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.auth-form .form-group {
    margin-bottom: 15px;
}

.auth-form button {
    width: 100%;
    padding: 12px;
    margin-top: 10px;
}

#auth-status {
    margin-bottom: 15px;
}

#auth-status .error-message,
#auth-status .success-message {
    margin-bottom: 15px;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--secondary-color);
    border: none;
    padding: 10px 20px;
    border-radius: 20px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s;
}

.btn-primary:hover {
    background-color: #1ed760;
}

.btn-logout {
    background-color: #E74C3C;
    color: var(--text-primary);
    padding: 8px 15px;
    border-radius: 4px;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s;
}

.btn-logout:hover {
    background-color: #C0392B;
}

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

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

.btn-spotify {
    background-color: var(--primary-color);
    color: var(--secondary-color);
    border: none;
    padding: 8px 15px;
    border-radius: 20px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 14px;
}

.btn-spotify:hover {
    background-color: #1ed760;
    transform: scale(1.05);
}

.btn-spotify.connected {
    background-color: #1DB954;
    opacity: 0.8;
}

.btn-spotify.connected:hover {
    background-color: #1DB954;
}

.btn-small {
    background-color: var(--primary-color);
    color: var(--secondary-color);
    border: none;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-small:hover {
    background-color: #1ed760;
}

.btn-secondary {
    background-color: #282828;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 14px;
}

.btn-secondary:hover {
    background-color: #1DB954;
    border-color: #1DB954;
    color: var(--secondary-color);
}

.btn-generate {
    background-color: #6c5ce7;
    color: var(--text-primary);
}

.btn-generate:hover {
    background-color: #7f71ff;
    color: var(--text-primary);
}

.btn-close {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
}

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

#search-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
}

#search-modal[style*="display: flex"] {
    display: flex !important;
}

#generate-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
}

#generate-modal[style*="display: flex"] {
    display: flex !important;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    pointer-events: auto;
    cursor: pointer;
}

.modal-content {
    position: relative;
    background-color: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    width: 90%;
    max-width: 900px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    pointer-events: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    margin: 0;
    color: var(--text-primary);
    font-size: 20px;
}

.btn-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 28px;
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.3s ease;
}

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

.modal-body {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.range-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.range-row input[type="range"] {
    flex: 1;
    accent-color: var(--primary-color);
}

.range-value {
    min-width: 40px;
    text-align: center;
    color: var(--primary-color);
    font-weight: 700;
}

.track-result {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 10px;
}

.playlist-actions {
    margin-top: 10px;
    display: flex;
    gap: 8px;
}

/* Improved Playlist Card Styles */
.playlist-card {
    background: linear-gradient(135deg, var(--bg-light) 0%, rgba(29, 185, 84, 0.05) 100%);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.playlist-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 8px 24px rgba(29, 185, 84, 0.2);
    transform: translateY(-2px);
}

.playlist-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 16px;
    gap: 20px;
}

.playlist-info {
    flex: 1;
}

.playlist-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 8px 0;
    word-break: break-word;
}

.playlist-description {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.4;
}

.playlist-stats {
    display: flex;
    align-items: center;
    gap: 10px;
}

.stat-badge {
    background-color: var(--primary-color);
    color: var(--secondary-color);
    padding: 8px 12px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 14px;
    white-space: nowrap;
}

.btn-collapse {
    background: transparent;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    padding: 6px 10px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 700;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
}

.btn-collapse:hover {
    background-color: rgba(29, 185, 84, 0.1);
    box-shadow: 0 2px 8px rgba(29, 185, 84, 0.2);
}

.collapse-icon {
    display: inline-block;
    transition: transform 0.3s ease;
}

.playlist-tracks-section {
    margin-bottom: 16px;
    max-height: 1000px;
    opacity: 1;
    transition: all 0.3s ease;
    overflow: hidden;
}

.playlist-tracks-section.collapsed {
    max-height: 0;
    opacity: 0;
    margin-bottom: 0;
}

.tracks-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--primary-color);
}

.tracks-label {
    font-weight: 700;
    color: var(--text-primary);
    font-size: 16px;
}

.track-count {
    background-color: rgba(29, 185, 84, 0.15);
    color: var(--primary-color);
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.tracks-list {
    max-height: 300px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: rgba(0, 0, 0, 0.2);
}

.track-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
    transition: background-color 0.2s;
}

.track-item:last-child {
    border-bottom: none;
}

.track-item:hover {
    background-color: rgba(29, 185, 84, 0.1);
}

.track-number {
    color: var(--primary-color);
    font-weight: 700;
    min-width: 25px;
    text-align: center;
    font-size: 12px;
}

.track-image {
    width: 44px;
    height: 44px;
    border-radius: 4px;
    object-fit: cover;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.track-image-placeholder {
    width: 44px;
    height: 44px;
    border-radius: 4px;
    background-color: rgba(29, 185, 84, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.track-details {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.track-name {
    color: var(--text-primary);
    word-break: break-word;
    font-weight: 600;
    font-size: 14px;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.track-artist {
    color: var(--text-secondary);
    font-size: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.track-time {
    color: var(--text-secondary);
    font-size: 12px;
    white-space: nowrap;
    flex-shrink: 0;
}

.playlist-empty {
    text-align: center;
    padding: 30px 20px;
    color: var(--text-secondary);
    font-size: 16px;
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    background-color: rgba(0, 0, 0, 0.2);
    margin-bottom: 16px;
}

.playlist-actions {
    display: flex;
    gap: 10px;
    margin-top: 16px;
}

.btn-action {
    flex: 1;
    padding: 10px 16px;
    border: none;
    border-radius: 8px;
    font-weight: 700;
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.3s ease;
    font-family: inherit;
}

.btn-action span {
    font-size: 16px;
}

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

.btn-add:hover {
    background-color: #1ed760;
    transform: scale(1.02);
    box-shadow: 0 4px 12px rgba(29, 185, 84, 0.3);
}

.btn-save {
    background-color: rgba(29, 185, 84, 0.2);
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.btn-save:hover {
    background-color: var(--primary-color);
    color: var(--secondary-color);
    transform: scale(1.02);
    box-shadow: 0 4px 12px rgba(29, 185, 84, 0.3);
}

.btn-action:active {
    transform: scale(0.98);
}

/* Scrollbar styling for tracks list */
.tracks-list::-webkit-scrollbar {
    width: 6px;
}

.tracks-list::-webkit-scrollbar-track {
    background: transparent;
}

.tracks-list::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 3px;
}

.tracks-list::-webkit-scrollbar-thumb:hover {
    background: #1ed760;
}

/* Invite button styling */
.btn-invite {
    background-color: rgba(29, 185, 84, 0.15);
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.btn-invite:hover {
    background-color: var(--primary-color);
    color: var(--secondary-color);
    transform: scale(1.02);
    box-shadow: 0 4px 12px rgba(29, 185, 84, 0.3);
}

/* Invite Modal Styles */
.invite-form {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.invite-form input {
    flex: 1;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: rgba(0, 0, 0, 0.2);
    color: var(--text-primary);
    font-size: 14px;
    transition: border-color 0.3s ease;
}

.invite-form input:focus {
    outline: none;
    border-color: var(--primary-color);
    background-color: rgba(29, 185, 84, 0.05);
}

.invite-form input::placeholder {
    color: var(--text-secondary);
}

#btn-invite {
    background-color: var(--primary-color);
    color: var(--secondary-color);
    padding: 10px 20px;
    white-space: nowrap;
    font-size: 14px;
}

#btn-invite:hover {
    background-color: #1ed760;
    transform: scale(1.02);
}

.collaborators-list {
    max-height: 300px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: rgba(0, 0, 0, 0.2);
    padding: 0;
}

.collaborators-header {
    padding: 12px 16px;
    font-weight: 700;
    color: var(--text-primary);
    border-bottom: 2px solid var(--primary-color);
    font-size: 14px;
}

.collaborator-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.2s ease;
}

.collaborator-item:hover {
    background-color: rgba(29, 185, 84, 0.1);
}

.collaborator-item:last-child {
    border-bottom: none;
}

.collaborator-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 0;
}

.collaborator-name-row {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.collaborator-name {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 14px;
    word-break: break-word;
}

.owner-badge {
    background-color: rgba(29, 185, 84, 0.2);
    color: var(--primary-color);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 700;
    white-space: nowrap;
}

.collaborator-email {
    color: var(--text-secondary);
    font-size: 12px;
    word-break: break-word;
}

.btn-remove-collab {
    background-color: transparent;
    border: 1px solid rgba(255, 0, 0, 0.3);
    color: #ff4444;
    width: 32px;
    height: 32px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 700;
    font-size: 16px;
    transition: all 0.3s ease;
    flex-shrink: 0;
    margin-left: 10px;
}

.btn-remove-collab:hover {
    background-color: rgba(255, 0, 0, 0.1);
    border-color: rgba(255, 0, 0, 0.6);
    color: #ff6666;
}

/* Delete buttons */
.btn-remove-track {
    background-color: transparent;
    border: 1px solid rgba(255, 0, 0, 0.3);
    color: #ff4444;
    width: 28px;
    height: 28px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 700;
    font-size: 14px;
    transition: all 0.3s ease;
    flex-shrink: 0;
    margin-left: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-remove-track:hover {
    background-color: rgba(255, 0, 0, 0.15);
    border-color: rgba(255, 0, 0, 0.6);
    color: #ff6666;
}

.btn-delete-playlist {
    background-color: transparent;
    border: 1px solid rgba(255, 0, 0, 0.3);
    color: #ff4444;
    width: 36px;
    height: 36px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 700;
    font-size: 18px;
    transition: all 0.3s ease;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

.btn-delete-playlist:hover {
    background-color: rgba(255, 0, 0, 0.15);
    border-color: rgba(255, 0, 0, 0.6);
    color: #ff6666;
}

.track-genres {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 6px;
}

.genre-tag {
    background-color: rgba(29, 185, 84, 0.2);
    border: 1px solid rgba(29, 185, 84, 0.5);
    color: #1DB954;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
    max-width: 100px;
}

/* Bridge Artists Container */
.bridge-artists-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    background-color: rgba(29, 185, 84, 0.05);
}

.bridge-column {
    display: flex;
    flex-direction: column;
}

.bridge-column h3 {
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--primary-color);
}

.bridge-column > div {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.artist-item {
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(29, 185, 84, 0.2);
    border-radius: 6px;
    padding: 8px 12px;
    font-size: 13px;
    color: var(--text-primary);
    transition: background-color 0.2s ease;
}

.artist-item:hover {
    background-color: rgba(29, 185, 84, 0.15);
    border-color: rgba(29, 185, 84, 0.5);
}

.artist-name {
    font-weight: 500;
    color: var(--text-primary);
}

.artist-username {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 2px;
}

.artist-score {
    display: flex;
    align-items: center;
    gap: 8px;
}

.score-bar {
    height: 4px;
    background-color: rgba(29, 185, 84, 0.3);
    border-radius: 2px;
    overflow: hidden;
    min-width: 60px;
    flex: 1;
}

.score-fill {
    height: 100%;
    background-color: var(--primary-color);
    border-radius: 2px;
}

.score-value {
    font-size: 12px;
    color: var(--primary-color);
    font-weight: 600;
    min-width: 35px;
    text-align: right;
}

/* Responsive design */
@media (max-width: 768px) {
    .bridge-artists-container {
        grid-template-columns: 1fr;
        gap: 16px;
    }
}