:root {
    --bg-color: #fafafa;
    --text-primary: #171717;
    --text-secondary: #525252;
    --accent-color: #ec4899; /* Vibrant Pink */
    --accent-hover: #db2777;
    --card-bg: #ffffff;
    --border-color: #e5e5e5;
    --gradient: linear-gradient(135deg, #ec4899, #8b5cf6, #06b6d4);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    position: relative;
    overflow-x: hidden;
}

/* Animated Background Blobs */
.glow-blob {
    position: fixed;
    border-radius: 50%;
    filter: blur(80px);
    z-index: -1;
    opacity: 0.6;
    animation: float 10s infinite ease-in-out alternate;
}

.blob-1 {
    top: -10%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: #ec4899;
}

.blob-2 {
    bottom: -10%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: #06b6d4;
    animation-delay: -5s;
}

.blob-3 {
    top: 40%;
    left: 60%;
    width: 300px;
    height: 300px;
    background: #8b5cf6;
    animation-delay: -2s;
}

@keyframes float {
    0% { transform: translateY(0) scale(1); }
    100% { transform: translateY(30px) scale(1.1); }
}

/* Glassmorphism Card */
.main-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 24px;
    padding: 3rem 2.5rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
    width: 100%;
}

.music-icon {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    display: inline-block;
    animation: bounce 2s infinite ease-in-out;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.hero {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: 1.6;
    padding: 1.5rem;
}

.container {
    width: 100%;
    max-width: 600px;
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

header {
    text-align: center;
    margin-bottom: 1rem;
}

header h1 {
    font-weight: 800;
    font-size: 2.8rem;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    color: var(--accent-color);
    font-size: 1.1rem;
    font-weight: 300;
    letter-spacing: 0.05em;
}

h2 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.input-group, .vibe-group {
    margin-bottom: 2.5rem;
}

textarea {
    width: 100%;
    background-color: rgba(255, 255, 255, 0.9);
    border: 2px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 1.2rem;
    resize: none;
    transition: all 0.3s;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.02);
}

textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(236, 72, 153, 0.2);
}

textarea::placeholder {
    color: #a3a3a3;
}

.vibe-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.vibe-btn {
    background-color: rgba(255,255,255,0.8);
    border: 2px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.8rem 1.5rem;
    border-radius: 30px;
    font-size: 1.05rem;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
}

.vibe-btn:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.vibe-btn.selected {
    background: var(--gradient);
    border-color: transparent;
    color: #fff;
    font-weight: 600;
}

.primary-btn {
    width: 100%;
    background: var(--gradient);
    color: #fff;
    border: none;
    padding: 1.5rem;
    border-radius: 16px;
    font-size: 1.4rem;
    font-weight: 800;
    cursor: pointer;
    transition: all 0.3s;
    font-family: 'Inter', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 10px 25px -5px rgba(236, 72, 153, 0.4);
}

.primary-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px -5px rgba(236, 72, 153, 0.5);
}

.primary-btn:active {
    transform: translateY(0);
}

.hidden {
    display: none !important;
}

.error-text {
    color: #ef4444;
    text-align: center;
    margin-top: 1rem;
    font-size: 0.95rem;
}

/* Loading state */
#loading-section {
    text-align: center;
    padding: 4rem 0;
}

.loader {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(236, 72, 153, 0.1);
    border-radius: 50%;
    border-top-color: var(--accent-color);
    animation: spin 1s ease-in-out infinite;
    margin: 0 auto 1.5rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-text {
    color: var(--accent-color);
    font-size: 1.2rem;
    letter-spacing: 0.05em;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Playlist Card */
.playlist-card {
    text-align: center;
}

.divider {
    border: 0;
    height: 1px;
    background: var(--border-color);
    margin: 2rem 0;
}

.playlist-title {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.playlist-desc {
    color: var(--text-secondary);
    font-style: italic;
    font-size: 1.1rem;
    max-width: 80%;
    margin: 0 auto;
    line-height: 1.5;
}

.track-list {
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin: 1rem 0;
}

.track-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.track-number {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-secondary);
    width: 30px;
    text-align: right;
}

.track-details {
    display: flex;
    flex-direction: column;
}

.track-name {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.2rem;
}

.track-artist {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.vibe-tags {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.vibe-tags span:first-child {
    color: var(--text-secondary);
    letter-spacing: 0.1em;
    font-size: 0.9rem;
}

.tag-text {
    color: var(--text-primary);
    font-weight: 600;
}

.action-buttons {
    display: flex;
    gap: 1rem;
}

.secondary-btn {
    flex: 1;
    background-color: rgba(255,255,255,0.8);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    padding: 1.2rem;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    font-family: 'Inter', sans-serif;
}

.secondary-btn:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
    background-color: rgba(236, 72, 153, 0.05);
}

footer {
    text-align: center;
    margin-top: auto;
}

.disclaimer {
    color: #525252;
    font-size: 0.8rem;
}

/* Responsiveness */
@media (max-width: 600px) {
    .container {
        padding: 1.5rem 1rem;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .playlist-title {
        font-size: 1.6rem;
    }
    
    .action-buttons {
        flex-direction: column;
    }
}