:root {
    --bg-primary: #0a0e17;
    --bg-secondary: #111827;
    --bg-tertiary: #1f2937;
    --bg-card: rgba(17, 24, 39, 0.8);
    --border-color: rgba(55, 65, 81, 0.6);
    
    --text-primary: #ffffff;
    --text-secondary: #9ca3af;
    --text-tertiary: #6b7280;
    
    --accent-blue: #3b82f6;
    --accent-blue-hover: #2563eb;
    --accent-cyan: #22d3ee;
    --accent-green: #10b981;
    --accent-red: #ef4444;
    
    --sidebar-width: 240px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #0a0e17 0%, #1a1f2e 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* ========== LOGIN PAGE ========== */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

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

.login-box {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 40px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.logo-section {
    text-align: center;
    margin-bottom: 32px;
}

.logo {
    width: 80px;
    height: 80px;
    border-radius: 12px;
    margin-bottom: 16px;
}

.logo-section h1 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 4px;
}

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

.login-form {
    margin-top: 24px;
}

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

.form-group label {
    display: block;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 8px;
}

.input-with-icon {
    position: relative;
}

.input-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
    pointer-events: none;
}

.form-group input {
    width: 100%;
    padding: 12px 12px 12px 42px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    transition: all 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-blue);
    background: var(--bg-secondary);
}

.form-group input::placeholder {
    color: var(--text-tertiary);
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

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

.btn-primary:hover {
    background: var(--accent-blue-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

.btn-block {
    width: 100%;
    margin-top: 8px;
}

.help-text {
    text-align: center;
    margin-top: 20px;
    font-size: 13px;
    color: var(--text-secondary);
}

.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5;
}

/* ========== DASHBOARD LAYOUT ========== */
.dashboard-layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 100;
}

.sidebar-header {
    padding: 24px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-logo {
    width: 40px;
    height: 40px;
    border-radius: 8px;
}

.sidebar-title {
    flex: 1;
}

.sidebar-title h2 {
    font-size: 16px;
    font-weight: 600;
}

.sidebar-title p {
    font-size: 12px;
    color: var(--text-secondary);
}

.sidebar-nav {
    flex: 1;
    padding: 20px 0;
    overflow-y: auto;
}

.nav-section {
    margin-bottom: 24px;
}

.nav-section-title {
    padding: 0 20px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-tertiary);
    margin-bottom: 8px;
    letter-spacing: 0.5px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 20px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.2s;
}

.nav-link:hover {
    background: rgba(59, 130, 246, 0.1);
    color: var(--text-primary);
}

.nav-link.active {
    background: rgba(59, 130, 246, 0.15);
    color: var(--accent-blue);
    border-left: 3px solid var(--accent-blue);
}

.nav-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.sidebar-footer {
    padding: 20px;
    border-top: 1px solid var(--border-color);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--accent-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 14px;
}

.user-info {
    flex: 1;
}

.user-name {
    font-size: 14px;
    font-weight: 500;
}

.user-role {
    font-size: 12px;
    color: var(--text-secondary);
}

.logout-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: 6px;
    transition: all 0.2s;
}

.logout-btn:hover {
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent-red);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 32px;
    max-width: calc(100vw - var(--sidebar-width));
}

.page-header {
    margin-bottom: 32px;
}

.page-header h1 {
    font-size: 32px;
    font-weight: 600;
    margin-bottom: 8px;
}

.page-header p {
    color: var(--text-secondary);
    font-size: 15px;
}

.text-accent {
    color: var(--accent-blue);
}

/* Dashboard Cards */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon.blue {
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent-blue);
}

.stat-icon.cyan {
    background: rgba(34, 211, 238, 0.1);
    color: var(--accent-cyan);
}

.stat-icon.pink {
    background: rgba(236, 72, 153, 0.1);
    color: #ec4899;
}

.stat-content {
    flex: 1;
}

.stat-label {
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.stat-value {
    font-size: 24px;
    font-weight: 600;
}

/* Now Playing Card */
.now-playing-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 32px;
}

.now-playing-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
}

.now-playing-header h3 {
    font-size: 13px;
    color: var(--accent-blue);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.now-playing-content {
    display: flex;
    gap: 20px;
    align-items: center;
}

.album-art {
    width: 120px;
    height: 120px;
    border-radius: 8px;
    object-fit: cover;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.song-info {
    flex: 1;
}

.song-title {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 4px;
}

.song-artist {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.progress-bar {
    width: 100%;
    height: 4px;
    background: var(--bg-tertiary);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 8px;
}

.progress-fill {
    height: 100%;
    background: var(--accent-blue);
    border-radius: 2px;
    transition: width 1s linear;
}

.time-info {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-tertiary);
}

/* Recent Songs List */
.recent-songs-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
}

.card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
}

.card-header h3 {
    font-size: 16px;
    font-weight: 600;
}

.song-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.song-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    transition: all 0.2s;
}

.song-item:hover {
    background: rgba(59, 130, 246, 0.05);
}

.song-number {
    width: 24px;
    text-align: center;
    color: var(--text-tertiary);
    font-size: 14px;
    font-weight: 500;
}

.song-thumbnail {
    width: 48px;
    height: 48px;
    border-radius: 6px;
    object-fit: cover;
}

.song-details {
    flex: 1;
}

.song-details-title {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 2px;
}

.song-details-artist {
    font-size: 13px;
    color: var(--text-secondary);
}

.song-time {
    font-size: 13px;
    color: var(--text-tertiary);
}

/* DJ Guide */
.connection-info {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
}

.connection-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    margin-bottom: 12px;
}

.connection-label {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
    font-size: 14px;
}

.connection-value {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--accent-cyan);
    font-family: 'Courier New', monospace;
    font-size: 14px;
}

.copy-btn {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: var(--accent-blue);
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s;
}

.copy-btn:hover {
    background: rgba(59, 130, 246, 0.2);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: #fbbf24;
    padding: 16px;
    border-radius: 8px;
    margin-bottom: 24px;
    display: flex;
    align-items: start;
    gap: 12px;
}

.steps-list {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
}

.step-item {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.step-number {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--accent-blue);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    flex-shrink: 0;
}

.step-content h4 {
    font-size: 16px;
    margin-bottom: 8px;
}

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

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s;
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
        max-width: 100vw;
        padding: 16px;
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .now-playing-content {
        flex-direction: column;
        text-align: center;
    }
}

/* Loading Spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-blue);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.loading-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
}