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

  body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1DB954 0%, #191414 100%);
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
  }

  .background-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 30% 50%, rgba(29, 185, 84, 0.3) 0%, rgba(25, 20, 20, 0.8) 70%);
    z-index: 1;
  }

  .container-fluid {
    position: relative;
    z-index: 2;
    min-height: 100vh;
  }

  .spotify-logo {
    color: #1DB954;
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 2rem;
  }

  .spotify-logo i {
    margin-right: 0.5rem;
  }

  .signup-container {
    background: transparent;
    border-radius: 20px;
    padding: 3rem 2.5rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    max-width: 700px;
    margin: 0 auto;
  }

  .signup-title {
    color: #fff;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-align: center;
  }

  .signup-subtitle {
    color: #b3b3b3;
    text-align: center;
    margin-bottom: 2rem;
    font-size: 1rem;
  }

  .form-group {
    margin-bottom: 1.5rem;
  }

  .form-label {
    color: #fff;
    font-weight: 600;
    margin-bottom: 0.5rem;
    display: block;
  }

  .form-control {
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    color: #fff;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    transition: all 0.3s ease;
  }

  .form-control:focus {
    background: rgba(255, 255, 255, 0.15);
    border-color: #1DB954;
    box-shadow: 0 0 0 0.2rem rgba(29, 185, 84, 0.25);
    color: #fff;
  }

  .form-control::placeholder {
    color: #b3b3b3;
  }

  .btn-signup {
    background: linear-gradient(135deg, #1DB954 0%, #1ed760 100%);
    border: none;
    border-radius: 50px;
    color: #000;
    font-weight: 700;
    font-size: 1.1rem;
    padding: 0.9rem 2rem;
    width: 100%;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 1rem;
  }

  .btn-signup:hover {
    background: linear-gradient(135deg, #1ed760 0%, #1DB954 100%);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(29, 185, 84, 0.3);
    color: #000;
  }

  .terms-text {
    color: #b3b3b3;
    font-size: 0.8rem;
    text-align: center;
    margin-top: 1.5rem;
    line-height: 1.4;
  }

  .terms-text a {
    color: #1DB954;
    text-decoration: none;
  }

  .terms-text a:hover {
    text-decoration: underline;
  }

  .app-download {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
  }

  .app-store-btn {
    background: rgba(0, 0, 0, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    padding: 0.5rem 1rem;
    transition: all 0.3s ease;
    text-decoration: none;
    color: #fff;
    font-size: 0.9rem;
  }

  .app-store-btn:hover {
    background: rgba(0, 0, 0, 0.9);
    transform: translateY(-2px);
    color: #fff;
  }

  .hero-image {
    position: absolute;
    right: -10%;
    top: 20%;
    width: 60%;
    height: 60%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 400 400"><defs><radialGradient id="grad1" cx="50%" cy="50%" r="50%"><stop offset="0%" style="stop-color:%231DB954;stop-opacity:0.3" /><stop offset="100%" style="stop-color:%23000000;stop-opacity:0" /></radialGradient></defs><circle cx="200" cy="200" r="200" fill="url(%23grad1)" /><circle cx="200" cy="200" r="150" fill="none" stroke="%231DB954" stroke-width="2" opacity="0.5" /><circle cx="200" cy="200" r="100" fill="none" stroke="%231DB954" stroke-width="2" opacity="0.3" /><circle cx="200" cy="200" r="50" fill="none" stroke="%231DB954" stroke-width="2" opacity="0.2" /></svg>') center/contain no-repeat;
    opacity: 0.6;
    z-index: 1;
  }

  .floating-notes {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
  }

  .note {
    position: absolute;
    color: #1DB954;
    font-size: 1.5rem;
    opacity: 0.3;
    animation: float 6s ease-in-out infinite;
  }

  .note:nth-child(1) {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
  }

  .note:nth-child(2) {
    top: 60%;
    left: 15%;
    animation-delay: 2s;
  }

  .note:nth-child(3) {
    top: 30%;
    left: 80%;
    animation-delay: 4s;
  }

  .note:nth-child(4) {
    top: 70%;
    left: 85%;
    animation-delay: 1s;
  }

  .note:nth-child(5) {
    top: 40%;
    left: 5%;
    animation-delay: 3s;
  }

  @keyframes float {

    0%,
    100% {
      transform: translateY(0px);
    }

    50% {
      transform: translateY(-20px);
    }
  }

  .pulse-effect {
    animation: pulse 2s ease-in-out infinite;
  }

  @keyframes pulse {
    0% {
      transform: scale(1);
    }

    50% {
      transform: scale(1.05);
    }

    100% {
      transform: scale(1);
    }
  }

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

    100% {
      transform: rotate(360deg);
    }
  }

  @media (max-width: 768px) {
    .signup-container {
      margin: 1rem;
      padding: 2rem 1.5rem;
    }

    .signup-title {
      font-size: 2rem;
    }

    .hero-image {
      display: none;
    }

    .app-download {
      flex-direction: column;
      align-items: center;
    }
  }

  .form-control:valid {
    border-color: #1DB954;
  }

  .form-control:invalid:not(:focus):not(:placeholder-shown) {
    border-color: #ff6b6b;
  }

  .input-group {
    position: relative;
  }

  .input-icon {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #b3b3b3;
    z-index: 10;
  }

  .login-container {
    background: transparent;
    border-radius: 20px;
    padding: 3rem 2.5rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    max-width: 700px;
    margin: 0 auto;
  }

  .login-title {
    color: #fff;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-align: center;
  }

  .login-subtitle {
    color: #b3b3b3;
    text-align: center;
    margin-bottom: 2rem;
    font-size: 1rem;
  }

  .form-control:focus {
    background: rgba(255, 255, 255, 0.15);
    border-color: #1DB954;
    box-shadow: 0 0 0 0.2rem rgba(29, 185, 84, 0.25);
    color: #fff;
  }

  .form-control::placeholder {
    color: #b3b3b3;
  }

  .btn-login {
    background: linear-gradient(135deg, #1DB954 0%, #1ed760 100%);
    border: none;
    border-radius: 50px;
    color: #000;
    font-weight: 700;
    font-size: 1.1rem;
    padding: 0.9rem 2rem;
    width: 100%;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 1rem;
  }

  .btn-login:hover {
    background: linear-gradient(135deg, #1ed760 0%, #1DB954 100%);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(29, 185, 84, 0.3);
    color: #000;
  }

  .forgot-password {
    text-align: center;
    margin-top: 1rem;
  }

  .forgot-password a {
    color: #1DB954;
    text-decoration: none;
    font-size: 0.9rem;
  }

  .forgot-password a:hover {
    text-decoration: underline;
  }

  .divider {
    text-align: center;
    margin: 2rem 0;
    position: relative;
  }

  .divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    height: 1px;
    background: rgba(255, 255, 255, 0.2);
  }

  .divider span {
    background: rgba(18, 18, 18, 0.95);
    color: #b3b3b3;
    padding: 0 1rem;
    font-size: 0.9rem;
  }

  .social-login {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
  }

  .social-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    color: #fff;
    font-weight: 600;
    padding: 0.8rem 1.5rem;
    text-decoration: none;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
  }

  .social-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    color: #fff;
  }

  .social-btn.google {
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
  }

  .social-btn.google:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: #1DB954;
  }

  .social-btn.facebook {
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
  }

  .social-btn.facebook:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: #1DB954;
  }

  .signup-link {
    text-align: center;
    margin-top: 2rem;
    color: #b3b3b3;
    font-size: 0.9rem;
  }

  .signup-link a {
    color: #1DB954;
    text-decoration: none;
    font-weight: 600;
  }

  .signup-link a:hover {
    text-decoration: underline;
  }

  .hero-image {
    position: absolute;
    right: -10%;
    top: 20%;
    width: 60%;
    height: 60%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 400 400"><defs><radialGradient id="grad1" cx="50%" cy="50%" r="50%"><stop offset="0%" style="stop-color:%231DB954;stop-opacity:0.3" /><stop offset="100%" style="stop-color:%23000000;stop-opacity:0" /></radialGradient></defs><circle cx="200" cy="200" r="200" fill="url(%23grad1)" /><circle cx="200" cy="200" r="150" fill="none" stroke="%231DB954" stroke-width="2" opacity="0.5" /><circle cx="200" cy="200" r="100" fill="none" stroke="%231DB954" stroke-width="2" opacity="0.3" /><circle cx="200" cy="200" r="50" fill="none" stroke="%231DB954" stroke-width="2" opacity="0.2" /></svg>') center/contain no-repeat;
    opacity: 0.6;
    z-index: 1;
  }

  .floating-notes {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
  }

  .note {
    position: absolute;
    color: #1DB954;
    font-size: 1.5rem;
    opacity: 0.3;
    animation: float 6s ease-in-out infinite;
  }

  .note:nth-child(1) {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
  }

  .note:nth-child(2) {
    top: 60%;
    left: 15%;
    animation-delay: 2s;
  }

  .note:nth-child(3) {
    top: 30%;
    left: 80%;
    animation-delay: 4s;
  }

  .note:nth-child(4) {
    top: 70%;
    left: 85%;
    animation-delay: 1s;
  }

  .note:nth-child(5) {
    top: 40%;
    left: 5%;
    animation-delay: 3s;
  }

  @keyframes float {

    0%,
    100% {
      transform: translateY(0px);
    }

    50% {
      transform: translateY(-20px);
    }
  }

  .pulse-effect {
    animation: pulse 2s ease-in-out infinite;
  }

  @keyframes pulse {
    0% {
      transform: scale(1);
    }

    50% {
      transform: scale(1.05);
    }

    100% {
      transform: scale(1);
    }
  }

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

    100% {
      transform: rotate(360deg);
    }
  }

  .remember-me {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
  }

  .remember-me input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: #1DB954;
  }

  .remember-me label {
    color: #b3b3b3;
    font-size: 0.9rem;
    cursor: pointer;
  }

  @media (max-width: 768px) {
    .login-container {
      margin: 1rem;
      padding: 2rem 1.5rem;
    }

    .login-title {
      font-size: 2rem;
    }

    .hero-image {
      display: none;
    }
  }

  .form-control:valid {
    border-color: #1DB954;
  }

  .form-control:invalid:not(:focus):not(:placeholder-shown) {
    border-color: #ff6b6b;
  }

  .input-group {
    position: relative;
  }

  .input-icon {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #b3b3b3;
    z-index: 10;
  }

  .password-toggle {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #b3b3b3;
    cursor: pointer;
    z-index: 10;
  }

  .password-toggle:hover {
    color: #1DB954;
  }

  .main-container {
    display: flex;
    height: 100%;
    background: #000 !important;
  }

  /* Sidebar Styles */
  .sidebar {
    width: 280px;
    background: #000;
    padding: 20px;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease;
    position: fixed;
    height: 100vh;
    z-index: 1000;
    transform: translateX(-100%);
  }

  .sidebar.active {
    transform: translateX(0);
  }

  .sidebar-header {
    display: flex;
    align-items: center;
    margin-bottom: 30px;
  }

  .sidebar-header i {
    color: #1DB954;
    font-size: 24px;
    margin-right: 10px;
  }

  .sidebar-header h2 {
    color: #fff;
    font-size: 20px;
    font-weight: bold;
  }

  .sidebar-menu {
    flex: 1;
  }

  .menu-item {
    display: flex;
    align-items: center;
    padding: 15px 0;
    color: #b3b3b3;
    text-decoration: none;
    transition: color 0.3s ease;
    cursor: pointer;
  }

  .menu-item:hover {
    color: #fff;
  }

  .menu-item.active {
    color: #1DB954;
  }

  .menu-item i {
    width: 24px;
    margin-right: 15px;
    font-size: 16px;
  }

  .menu-section {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #333;
  }

  .menu-section h3 {
    color: #b3b3b3;
    font-size: 12px;
    text-transform: uppercase;
    margin-bottom: 20px;
    letter-spacing: 1px;
  }

  .playlist-item {
    padding: 8px 0;
    color: #b3b3b3;
    cursor: pointer;
    transition: color 0.3s ease;
  }

  .playlist-item:hover {
    color: #fff;
  }

  /* Main Content */
  .main-content {
    flex: 1;
    background: #121212;
    padding: 20px;
    margin-left: 0;
    transition: margin-left 0.3s ease;
    padding-bottom: 120px;
  }

  .main-content.sidebar-open {
    margin-left: 280px;
  }

  /* Top Bar */
  .top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
  }

  .menu-toggle {
    background: none;
    border: none;
    color: #fff;
    font-size: 24px;
    cursor: pointer;
    padding: 10px;
    border-radius: 50%;
    transition: background 0.3s ease;
  }

  .menu-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
  }

  .search-bar {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 25px;
    padding: 10px 20px;
    flex: 1;
    max-width: 400px;
    margin: 0 20px;
  }

  .search-bar input {
    background: none;
    border: none;
    color: #fff;
    outline: none;
    flex: 1;
    margin-left: 10px;
  }

  .search-bar input::placeholder {
    color: #b3b3b3;
  }

  .search-bar i {
    color: #b3b3b3;
  }

  .user-profile {
    display: flex;
    align-items: center;
    color: #fff;
    cursor: pointer;
  }

  .user-profile img {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    margin-right: 10px;
  }

  /* Content Sections */
  .content-section {
    margin-bottom: 40px;
  }

  .section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
  }

  .section-title {
    color: #fff;
    font-size: 24px;
    font-weight: bold;
  }

  .see-all {
    color: #b3b3b3;
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
  }

  .see-all:hover {
    color: #fff;
  }

  .cards-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 24px;
  }

  .card {
    background: #181818;
    border-radius: 8px;
    padding: 16px;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
  }

  .card:hover {
    background: #282828;
    transform: translateY(-2px);
  }

  .card-image-container {
    position: relative;
    margin-bottom: 16px;
  }

  .card img {
    width: 100%;
    height: 160px;
    object-fit: cover;
    border-radius: 4px;
  }

  .card-title {
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 8px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .card-subtitle {
    color: #b3b3b3;
    font-size: 14px;
    line-height: 1.6;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .play-button {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: #1DB954;
    border: none;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    color: #000;
    font-size: 20px;
    cursor: pointer;
    opacity: 0;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
  }

  .card:hover .play-button {
    opacity: 1;
  }

  .play-button:hover {
    transform: scale(1.05);
  }

  /* Music Player */
  .music-player {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: #181818;
    border-top: 1px solid #333;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    z-index: 1001;
    height: 90px;
  }

  .now-playing {
    display: flex;
    align-items: center;
    min-width: 280px;
  }

  .now-playing img {
    width: 56px;
    height: 56px;
    border-radius: 4px;
    margin-right: 15px;
  }

  .song-info h4 {
    color: #fff;
    font-size: 14px;
    margin-bottom: 4px;
  }

  .song-info p {
    color: #b3b3b3;
    font-size: 12px;
  }

  .like-button {
    background: none;
    border: none;
    color: #b3b3b3;
    font-size: 16px;
    cursor: pointer;
    margin-left: 15px;
  }

  .like-button:hover {
    color: #1DB954;
  }

  .player-controls {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
  }

  .control-buttons {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 10px;
  }

  .control-btn {
    background: none;
    border: none;
    color: #b3b3b3;
    font-size: 16px;
    cursor: pointer;
    transition: color 0.3s ease;
  }

  .control-btn:hover {
    color: #fff;
  }

  .play-pause-btn {
    background: #fff;
    border: none;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    color: #000;
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .progress-bar {
    display: flex;
    align-items: center;
    width: 100%;
    max-width: 500px;
    gap: 10px;
  }

  .time {
    color: #b3b3b3;
    font-size: 12px;
    min-width: 40px;
  }

  .progress {
    flex: 1;
    height: 4px;
    background: #404040;
    border-radius: 2px;
    cursor: pointer;
    position: relative;
  }

  .progress-fill {
    height: 100%;
    background: #1DB954;
    border-radius: 2px;
    width: 30%;
    position: relative;
  }

  .volume-controls {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 280px;
    justify-content: flex-end;
  }

  .volume-btn {
    background: none;
    border: none;
    color: #b3b3b3;
    font-size: 16px;
    cursor: pointer;
  }

  .volume-btn:hover {
    color: #fff;
  }

  .volume-slider {
    width: 100px;
    height: 4px;
    background: #404040;
    border-radius: 2px;
    cursor: pointer;
    position: relative;
  }

  .volume-fill {
    height: 100%;
    background: #1DB954;
    border-radius: 2px;
    width: 70%;
  }

  /* Sidebar Overlay */
  .sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
  }

  .sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
  }

  /* Responsive */
  @media (max-width: 768px) {
    .sidebar {
      width: 100%;
    }

    .main-content.sidebar-open {
      margin-left: 0;
    }

    .music-player {
      flex-direction: column;
      height: auto;
      padding: 10px;
    }

    .now-playing {
      min-width: auto;
      margin-bottom: 10px;
    }

    .volume-controls {
      min-width: auto;
      margin-top: 10px;
    }
  }