:root {
    --bg-primary: #000000;
    --bg-secondary: #0a0a0a;
    --bg-tertiary: #141414;
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --accent: #ff4500;
    --accent-hover: #ff6a33;
    --border: #2a2a2a;
    --error: #ff3333;
    --success: #00ff88;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.logo {
    text-align: center;
    margin-bottom: 40px;
}

.logo h1 {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo .version {
    color: var(--accent);
}

.tagline {
    color: var(--text-secondary);
    font-size: 1.2rem;
    margin-top: 10px;
}

#authSection {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 40px;
    max-width: 450px;
    width: 100%;
}

.auth-toggle {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
}

.auth-toggle button {
    flex: 1;
    padding: 12px;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s;
}

.auth-toggle button.active {
    background: var(--accent);
    color: var(--text-primary);
    border-color: var(--accent);
}

.auth-form h2 {
    margin-bottom: 25px;
    color: var(--text-primary);
}

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

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.form-group textarea {
    resize: vertical;
    font-family: inherit;
}

.btn-primary {
    width: 100%;
    padding: 14px;
    background: var(--accent);
    color: var(--text-primary);
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-primary:hover {
    background: var(--accent-hover);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-secondary {
    padding: 10px 20px;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s;
}

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

.btn-large {
    padding: 16px;
    font-size: 1.1rem;
}

.error {
    color: var(--error);
    margin-top: 15px;
    display: none;
}

.error.show {
    display: block;
}

.success {
    color: var(--success);
}

header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 20px 0;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    font-size: 1.8rem;
}

.user-menu {
    display: flex;
    gap: 15px;
    align-items: center;
}

.user-menu span {
    color: var(--text-secondary);
}

.editor-container,
.admin-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.editor-main,
.admin-main {
    max-width: 1400px;
    margin: 0 auto;
    padding: 40px 20px;
    width: 100%;
}

.editor-panel,
.composition-panel,
.player-panel,
.tracks-panel,
.stats-panel,
.users-panel,
.activity-panel {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 30px;
    margin-bottom: 30px;
}

.editor-panel h2,
.composition-panel h2,
.player-panel h2,
.tracks-panel h2,
.stats-panel h2,
.users-panel h2,
.activity-panel h2 {
    margin-bottom: 25px;
    color: var(--text-primary);
    border-bottom: 2px solid var(--accent);
    padding-bottom: 10px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.checkbox-group {
    display: flex;
    align-items: center;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
    width: auto;
    margin-right: 10px;
    cursor: pointer;
}

input[type="range"] {
    width: 100%;
    margin-top: 10px;
    accent-color: var(--accent);
}

.status-message {
    margin-top: 20px;
    padding: 15px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 4px;
    display: none;
}

.status-message.show {
    display: block;
}

.status-message.loading {
    border-color: var(--accent);
    color: var(--accent);
}

#audioPlayer {
    width: 100%;
    margin: 20px 0;
    filter: invert(1) hue-rotate(180deg);
}

.player-controls {
    display: flex;
    gap: 15px;
}

#tracksList {
    display: grid;
    gap: 15px;
}

.track-item {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 20px;
    cursor: pointer;
    transition: border-color 0.3s;
}

.track-item:hover {
    border-color: var(--accent);
}

.track-title {
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--accent);
}

.track-info {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.stat-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 25px;
    text-align: center;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 10px;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

thead {
    background: var(--bg-tertiary);
}

th, td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    color: var(--accent);
    font-weight: 600;
}

tr:hover {
    background: var(--bg-tertiary);
}

.composition-section {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 15px;
    margin-bottom: 15px;
}

.composition-section h3 {
    color: var(--accent);
    margin-bottom: 10px;
}

.lyrics-line {
    padding: 5px 0;
    color: var(--text-secondary);
}

.btn-small {
    padding: 8px 15px;
    font-size: 0.9rem;
}

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

.btn-danger:hover {
    background: #ff4444;
}

#mfaSection {
    text-align: center;
}

#mfaSection h2 {
    margin-bottom: 20px;
}

@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }

    .logo h1 {
        font-size: 2rem;
    }

    #authSection {
        padding: 25px;
    }

    .header-content {
        flex-direction: column;
        gap: 15px;
    }

    .player-controls {
        flex-direction: column;
    }

    table {
        font-size: 0.9rem;
    }

    th, td {
        padding: 10px;
    }
}