/* ==================== Variables ==================== */
:root {
    --primary-color: #1DB954;
    --primary-hover: #1ed760;
    --bg-dark: #121212;
    --bg-card: #181818;
    --bg-hover: #282828;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --border-color: #333;
    --telegram-color: #0088cc;
    --danger-color: #e74c3c;
    --success-color: #2ecc71;
}

/* ==================== Reset & Base ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
}

a {
    text-decoration: none;
    color: inherit;
}

/* ==================== Buttons ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: 20px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.2s;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: scale(1.02);
}

.btn-secondary {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background-color: #333;
}

.btn-danger {
    background-color: var(--danger-color);
    color: white;
}

/* ==================== Login Page ==================== */
.login-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
}

.login-container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.login-card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 40px;
    text-align: center;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}

.login-card .logo {
    margin-bottom: 10px;
}

.login-card .logo i {
    font-size: 48px;
    color: var(--primary-color);
}

.login-card .logo h1 {
    font-size: 32px;
    margin-top: 10px;
}

.login-card .tagline {
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.login-methods {
    margin: 30px 0;
}

.login-methods h3 {
    margin-bottom: 20px;
    color: var(--text-secondary);
    font-weight: normal;
}

#telegram-login {
    display: flex;
    justify-content: center;
    margin: 20px 0;
}

.demo-login {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.demo-login p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 10px;
}

.features {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.feature {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
}

.feature i {
    font-size: 24px;
    color: var(--primary-color);
}

.feature span {
    font-size: 12px;
}

/* ==================== Dashboard Layout ==================== */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 240px;
    background-color: #000;
    padding: 20px;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
}

.sidebar .logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar .logo i {
    font-size: 32px;
    color: var(--primary-color);
}

.sidebar .logo h1 {
    font-size: 24px;
}

.nav-menu {
    flex: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 16px;
    border-radius: 8px;
    color: var(--text-secondary);
    transition: all 0.2s;
    margin-bottom: 4px;
}

.nav-item:hover {
    color: var(--text-primary);
    background-color: var(--bg-hover);
}

.nav-item.active {
    color: var(--text-primary);
    background-color: var(--bg-hover);
}

.nav-item i {
    width: 24px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background-color: var(--bg-card);
    border-radius: 8px;
    margin-top: auto;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
}

.user-details {
    flex: 1;
    overflow: hidden;
}

.user-details span {
    display: block;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-details small {
    color: var(--text-secondary);
}

.btn-logout {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    transition: color 0.2s;
}

.btn-logout:hover {
    color: var(--danger-color);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 240px;
    padding: 30px;
    background-color: var(--bg-dark);
}

.page {
    display: none;
}

.page.active {
    display: block;
}

.page h2 {
    margin-bottom: 24px;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

/* ==================== Search ==================== */
.search-box {
    margin-bottom: 30px;
}

.search-input-group {
    display: flex;
    gap: 10px;
    max-width: 700px;
}

.search-input-group input {
    flex: 1;
    padding: 12px 20px;
    border: none;
    border-radius: 20px;
    background-color: var(--bg-card);
    color: var(--text-primary);
    font-size: 14px;
}

.search-input-group input:focus {
    outline: 2px solid var(--primary-color);
}

.search-input-group select {
    padding: 12px 20px;
    border: none;
    border-radius: 20px;
    background-color: var(--bg-card);
    color: var(--text-primary);
    font-size: 14px;
    cursor: pointer;
}

/* Results Grid */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}

.result-card {
    background-color: var(--bg-card);
    border-radius: 8px;
    padding: 16px;
    transition: all 0.2s;
    cursor: pointer;
}

.result-card:hover {
    background-color: var(--bg-hover);
    transform: translateY(-4px);
}

.result-card .cover {
    width: 100%;
    aspect-ratio: 1;
    border-radius: 8px;
    background-color: var(--bg-hover);
    margin-bottom: 12px;
    overflow: hidden;
}

.result-card .cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.result-card .title {
    font-weight: 600;
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.result-card .artist {
    color: var(--text-secondary);
    font-size: 14px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.result-card .meta {
    display: flex;
    justify-content: space-between;
    margin-top: 8px;
    font-size: 12px;
    color: var(--text-secondary);
}

/* ==================== Playlists ==================== */
.playlists-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
}

.playlist-card {
    background-color: var(--bg-card);
    border-radius: 8px;
    padding: 20px;
    transition: all 0.2s;
    cursor: pointer;
}

.playlist-card:hover {
    background-color: var(--bg-hover);
}

.playlist-card .playlist-icon {
    width: 80px;
    height: 80px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--primary-color), #1a5c2e);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.playlist-card .playlist-icon i {
    font-size: 32px;
}

.playlist-card h4 {
    margin-bottom: 4px;
}

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

.playlist-card .playlist-actions {
    display: flex;
    gap: 8px;
    margin-top: 12px;
}

/* ==================== History ==================== */
.history-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.history-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 16px;
    background-color: var(--bg-card);
    border-radius: 8px;
    transition: background-color 0.2s;
}

.history-item:hover {
    background-color: var(--bg-hover);
}

.history-item .cover {
    width: 50px;
    height: 50px;
    border-radius: 4px;
    background-color: var(--bg-hover);
    overflow: hidden;
}

.history-item .cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.history-item .info {
    flex: 1;
}

.history-item .title {
    font-weight: 600;
}

.history-item .artist {
    color: var(--text-secondary);
    font-size: 14px;
}

.history-item .meta {
    color: var(--text-secondary);
    font-size: 12px;
    text-align: right;
}

/* ==================== Settings ==================== */
.settings-form {
    max-width: 500px;
}

.setting-group {
    margin-bottom: 20px;
}

.setting-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.setting-group select,
.setting-group input[type="text"] {
    width: 100%;
    padding: 12px 16px;
    border: none;
    border-radius: 8px;
    background-color: var(--bg-card);
    color: var(--text-primary);
    font-size: 14px;
}

.setting-group input[type="checkbox"] {
    margin-right: 8px;
}

/* ==================== Modals ==================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--bg-card);
    border-radius: 12px;
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

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

.modal-header h3 {
    margin: 0;
}

.btn-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
}

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

.modal-body {
    padding: 20px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 20px;
    border-top: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: none;
    border-radius: 8px;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-size: 14px;
}

.form-group textarea {
    min-height: 100px;
    resize: vertical;
}

/* ==================== Toast ==================== */
.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    padding: 16px 24px;
    background-color: var(--bg-card);
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s;
    z-index: 2000;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast.success {
    border-left: 4px solid var(--success-color);
}

.toast.error {
    border-left: 4px solid var(--danger-color);
}

/* ==================== Detail Page ==================== */
.detail-header {
    margin-bottom: 24px;
}

.detail-content {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.detail-hero {
    display: flex;
    gap: 32px;
    padding: 24px;
    background: linear-gradient(180deg, var(--bg-hover) 0%, var(--bg-dark) 100%);
    border-radius: 12px;
}

.detail-cover {
    width: 250px;
    height: 250px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
    flex-shrink: 0;
}

.detail-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.detail-cover .placeholder-cover {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), #1a5c2e);
    display: flex;
    align-items: center;
    justify-content: center;
}

.detail-cover .placeholder-cover i {
    font-size: 64px;
    opacity: 0.5;
}

.detail-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}

.detail-type {
    font-size: 12px;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.detail-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 16px;
    line-height: 1.1;
}

.detail-meta {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.detail-meta a {
    color: var(--text-primary);
    transition: color 0.2s;
}

.detail-meta a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.detail-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.detail-section {
    margin-top: 24px;
}

.detail-section h3 {
    margin-bottom: 16px;
    font-size: 20px;
}

/* Track List */
.track-list {
    display: flex;
    flex-direction: column;
}

.track-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 16px;
    border-radius: 4px;
    transition: background-color 0.2s;
}

.track-item:hover {
    background-color: var(--bg-hover);
}

.track-number {
    width: 24px;
    color: var(--text-secondary);
    text-align: center;
}

.track-info {
    flex: 1;
    min-width: 0;
}

.track-name {
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.track-artist {
    color: var(--text-secondary);
    font-size: 14px;
}

.track-artist a {
    color: var(--text-secondary);
    transition: color 0.2s;
}

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

.track-duration {
    color: var(--text-secondary);
    font-size: 14px;
}

.track-actions {
    display: flex;
    gap: 8px;
    opacity: 0;
    transition: opacity 0.2s;
}

.track-item:hover .track-actions {
    opacity: 1;
}

.track-actions button {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: all 0.2s;
}

.track-actions button:hover {
    color: var(--text-primary);
    background-color: var(--bg-card);
}

/* Albums Grid */
.albums-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 20px;
}

.album-card {
    background-color: var(--bg-card);
    border-radius: 8px;
    padding: 16px;
    cursor: pointer;
    transition: all 0.2s;
}

.album-card:hover {
    background-color: var(--bg-hover);
    transform: translateY(-4px);
}

.album-card .cover {
    width: 100%;
    aspect-ratio: 1;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 12px;
}

.album-card .cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.album-card .name {
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.album-card .year {
    color: var(--text-secondary);
    font-size: 14px;
}

/* Clickable Link Style */
.clickable-link {
    cursor: pointer;
    transition: color 0.2s;
}

.clickable-link:hover {
    color: var(--primary-color) !important;
    text-decoration: underline;
}

@media (max-width: 768px) {
    .detail-hero {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .detail-cover {
        width: 200px;
        height: 200px;
    }

    .detail-title {
        font-size: 32px;
    }

    .detail-actions {
        justify-content: center;
    }
}

/* ==================== Utilities ==================== */
.placeholder-text {
    color: var(--text-secondary);
    text-align: center;
    padding: 40px;
}

.loading {
    display: flex;
    justify-content: center;
    padding: 40px;
}

.loading::after {
    content: '';
    width: 40px;
    height: 40px;
    border: 3px solid var(--bg-hover);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ==================== Responsive ==================== */
@media (max-width: 768px) {
    .sidebar {
        width: 70px;
        padding: 10px;
    }

    .sidebar .logo h1,
    .nav-item span,
    .user-details {
        display: none;
    }

    .sidebar .logo {
        justify-content: center;
    }

    .nav-item {
        justify-content: center;
    }

    .user-info {
        justify-content: center;
        padding: 10px;
    }

    .main-content {
        margin-left: 70px;
    }

    .search-input-group {
        flex-wrap: wrap;
    }

    .search-input-group input {
        width: 100%;
    }
}