@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;700;900&display=swap');

:root {
    --background-color: #121212;
    --surface-color: #1E1E1E;
    --primary-color: #1DB954;
    --text-primary-color: #FFFFFF;
    --text-secondary-color: #B3B3B3;
    --border-radius-btn: 12px;
    --border-radius-card: 12px;
}

body {
    background-color: var(--background-color);
    color: var(--text-primary-color);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    scroll-behavior: smooth;
}

.navbar {
    background-color: rgba(30, 30, 30, 0.8);
    backdrop-filter: blur(10px);
}

.navbar-brand {
    font-weight: 900;
    font-size: 1.75rem;
    color: var(--text-primary-color);
}

.navbar-brand:hover {
    color: var(--primary-color);
}

.hero {
    background: linear-gradient(180deg, var(--surface-color) 0%, var(--background-color) 100%);
    padding: 120px 0;
    text-align: center;
}

.hero h1 {
    font-weight: 900;
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.hero p {
    color: var(--text-secondary-color);
    font-size: 1.25rem;
    margin-bottom: 2rem;
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    border-radius: var(--border-radius-btn);
    font-weight: 700;
    padding: 12px 32px;
    font-size: 1.1rem;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

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

.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-weight: 700;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.feature-card {
    background-color: var(--surface-color);
    border-radius: var(--border-radius-card);
    padding: 2rem;
    text-align: center;
    height: 100%;
    border: 1px solid #282828;
}

.feature-card .icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

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

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

.footer {
    background-color: var(--surface-color);
    padding: 2rem 0;
    text-align: center;
    color: var(--text-secondary-color);
}

.footer a {
    color: var(--text-secondary-color);
    text-decoration: none;
}

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

/* Floating Action Button (FAB) */
.fab {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background-color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary-color);
    font-size: 24px;
    border: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    cursor: pointer;
    transition: transform 0.2s ease-in-out, background-color 0.2s;
    z-index: 1050;
}

.fab:hover {
    background-color: #1ed760;
    transform: scale(1.1);
}

/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    z-index: 1055;
    display: none; /* Hidden by default */
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal-overlay.visible {
    display: block;
    opacity: 1;
}

.modal-container {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--surface-color);
    border-top-left-radius: 20px;
    border-top-right-radius: 20px;
    padding: 1.5rem;
    transform: translateY(100%);
    transition: transform 0.3s ease-out;
    max-height: 80vh;
    overflow-y: auto;
}

.modal-overlay.visible .modal-container {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 1rem;
    border-bottom: 1px solid #282828;
}

.modal-title {
    font-weight: 700;
    font-size: 1.5rem;
}

.btn-close-modal {
    background: none;
    border: none;
    color: var(--text-secondary-color);
    font-size: 1.5rem;
}

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

.search-bar-container {
    position: relative;
    margin-top: 1rem;
}

.search-bar-container .bi-search {
    position: absolute;
    top: 50%;
    left: 15px;
    transform: translateY(-50%);
    color: var(--text-secondary-color);
}

#song-search-input {
    background-color: #282828;
    border: 1px solid #333;
    color: var(--text-primary-color);
    border-radius: 8px;
    padding-left: 40px;
    height: 50px;
}

#song-search-input::placeholder {
    color: var(--text-secondary-color);
}

.source-toggles {
    display: flex;
    gap: 10px;
    margin-top: 1rem;
}

.btn-source {
    flex-grow: 1;
    background-color: #282828;
    border: 1px solid #333;
    color: var(--text-secondary-color);
    border-radius: 8px;
    padding: 10px;
    transition: background-color 0.2s, color 0.2s;
}

.btn-source.active {
    background-color: var(--primary-color);
    color: var(--text-primary-color);
    border-color: var(--primary-color);
}

.search-result-item {
    display: flex;
    align-items: center;
    padding: 10px;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.2s;
}

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

.search-result-item img {
    width: 50px;
    height: 50px;
    border-radius: 4px;
    margin-right: 15px;
}

.search-result-item .track-info {
    flex-grow: 1;
}

.search-result-item .track-title {
    font-weight: 600;
}

.search-result-item .artist-name {
    font-size: 0.9rem;
    color: var(--text-secondary-color);
}

.source-icon {
    font-size: 1.5rem;
    color: var(--text-secondary-color);
}

.queue-item {
    background-color: var(--surface-color);
    border-radius: var(--border-radius-card);
    padding: 1rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    border: 1px solid #282828;
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.queue-item.new-item {
    opacity: 0;
    transform: translateY(20px);
}


.queue-item img {
    width: 64px;
    height: 64px;
    border-radius: 8px;
    margin-right: 1rem;
}

.queue-item .track-info {
    flex-grow: 1;
}

.queue-item .track-title {
    font-weight: 600;
    color: var(--text-primary-color);
}

.queue-item .artist-name {
    color: var(--text-secondary-color);
}

.vote-button {
    background-color: transparent;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    border-radius: 8px;
    font-weight: 600;
    width: 50px;
    height: 50px;
}

.vote-button .bi {
    font-size: 1.2rem;
}