/* NOTA - Chiptune Tracker Styles */
:root {
    --bg-primary: #0a0e14;
    --bg-secondary: #0d1117;
    --bg-tertiary: #161b22;
    --bg-elevated: #1c2128;
    --bg-hover: #21262d;
    --border: #30363d;
    --border-light: #3a424a;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --accent: #00cc88;
    --accent-dim: #00995e;
    --accent-glow: rgba(0, 204, 136, 0.15);
    --note-color: #58d68d;
    --instrument-color: #85c1e9;
    --volume-color: #f7dc6f;
    --effect-color: #bb8fce;
    --cursor-color: rgba(0, 204, 136, 0.3);
    --playing-row: rgba(0, 204, 136, 0.12);
    --danger: #f85149;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
    --font-ui: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --sidebar-width: 200px;
}

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

html, body {
    height: 100%;
    font-family: var(--font-ui);
    font-size: 14px;
    color: var(--text-primary);
    background: var(--bg-primary);
}

/* Layout */
.app-layout {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.sidebar-brand {
    padding: 20px 16px 12px;
    border-bottom: 1px solid var(--border);
}

.sidebar-brand h1 {
    font-family: var(--font-mono);
    font-size: 24px;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 2px;
}

.brand-sub {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.sidebar-nav {
    list-style: none;
    padding: 12px 8px;
    flex: 1;
}

.sidebar-nav li a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 6px;
    font-size: 14px;
    transition: background 0.15s, color 0.15s;
}

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

.sidebar-nav li a.active {
    background: var(--accent-glow);
    color: var(--accent);
}

.nav-icon {
    font-size: 16px;
    width: 20px;
    text-align: center;
}

.sidebar-footer {
    padding: 12px 16px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.inline-form {
    display: inline;
}

.btn-link {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 12px;
    text-decoration: underline;
}

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

.main-content {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px 12px;
    font-size: 13px;
    font-family: var(--font-ui);
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
    white-space: nowrap;
}

.btn:hover {
    background: var(--bg-hover);
    border-color: var(--border-light);
}

.btn-accent {
    background: var(--accent-dim);
    border-color: var(--accent);
    color: #fff;
}

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

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

.btn-danger:hover {
    background: var(--danger);
    color: #fff;
}

.btn-sm {
    padding: 3px 8px;
    font-size: 12px;
}

.btn-full {
    width: 100%;
    padding: 10px;
}

.btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #000;
    font-weight: 600;
}

.btn-primary:hover {
    background: #00e699;
}

.btn-transport {
    font-size: 16px;
    width: 34px;
    height: 34px;
    padding: 0;
}

/* Login Page */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--bg-primary);
}

.login-container {
    width: 320px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 32px 24px;
}

.login-brand {
    text-align: center;
    margin-bottom: 24px;
}

.login-brand h1 {
    font-family: var(--font-mono);
    font-size: 32px;
    color: var(--accent);
    letter-spacing: 3px;
}

.login-brand span {
    font-size: 12px;
    color: var(--text-muted);
}

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

.login-form label {
    display: block;
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.login-form input {
    width: 100%;
    padding: 8px 10px;
    font-size: 14px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-primary);
    outline: none;
}

.login-form input:focus {
    border-color: var(--accent);
}

.login-error {
    background: rgba(248, 81, 73, 0.1);
    border: 1px solid var(--danger);
    color: var(--danger);
    padding: 8px 10px;
    border-radius: 4px;
    font-size: 13px;
    margin-bottom: 16px;
}

/* Editor Layout */
.editor-layout {
    display: flex;
    flex-direction: column;
    height: 100%;
}

/* Toolbar */
.toolbar {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 8px 12px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
}

.toolbar-group {
    display: flex;
    align-items: center;
    gap: 6px;
}

.toolbar-label {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.toolbar-input {
    padding: 4px 8px;
    font-size: 13px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 3px;
    color: var(--text-primary);
    outline: none;
    width: 140px;
}

.toolbar-input:focus {
    border-color: var(--accent);
}

.toolbar-input-sm {
    width: 60px;
}

.toolbar-select {
    padding: 4px 8px;
    font-size: 13px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 3px;
    color: var(--text-primary);
    outline: none;
}

.toolbar-transport {
    display: flex;
    gap: 4px;
}

.toolbar-right {
    margin-left: auto;
    display: flex;
    gap: 6px;
}

/* Editor Body */
.editor-body {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Order Panel */
.order-panel {
    width: 120px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    padding: 8px;
    flex-shrink: 0;
}

.order-panel h3 {
    font-size: 11px;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 8px;
    letter-spacing: 1px;
}

.order-list {
    flex: 1;
    overflow-y: auto;
    font-family: var(--font-mono);
    font-size: 12px;
}

.order-row {
    display: flex;
    padding: 3px 6px;
    cursor: pointer;
    border-radius: 3px;
    color: var(--text-secondary);
}

.order-row:hover {
    background: var(--bg-hover);
}

.order-row.active {
    background: var(--accent-glow);
    color: var(--accent);
}

.order-controls {
    display: flex;
    gap: 4px;
    margin-top: 8px;
}

/* Tracker Grid */
.tracker-container {
    flex: 1;
    overflow: auto;
    padding: 0;
    background: var(--bg-primary);
}

.tracker-grid {
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.6;
    min-width: 100%;
    user-select: none;
}

.tracker-header {
    display: flex;
    position: sticky;
    top: 0;
    z-index: 10;
    background: var(--bg-tertiary);
    border-bottom: 2px solid var(--border);
}

.tracker-header-cell {
    padding: 6px 8px;
    text-align: center;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
    border-right: 1px solid var(--border);
}

.tracker-header-cell.row-num {
    width: 36px;
    min-width: 36px;
}

.tracker-header-cell.channel {
    width: 160px;
    min-width: 160px;
}

.tracker-row {
    display: flex;
    border-bottom: 1px solid rgba(48, 54, 61, 0.3);
}

.tracker-row:nth-child(4n+1) {
    background: rgba(255, 255, 255, 0.015);
}

.tracker-row:nth-child(16n+1) {
    border-top: 1px solid var(--border);
}

.tracker-row.current-row {
    background: var(--playing-row);
}

.tracker-row.cursor-row {
    background: var(--cursor-color);
}

.row-number {
    width: 36px;
    min-width: 36px;
    padding: 2px 6px;
    color: var(--text-muted);
    text-align: right;
    border-right: 1px solid var(--border);
    font-size: 12px;
}

.tracker-cell {
    width: 160px;
    min-width: 160px;
    padding: 2px 8px;
    border-right: 1px solid rgba(48, 54, 61, 0.4);
    cursor: text;
    display: flex;
    gap: 0;
}

.tracker-cell.cursor-cell {
    outline: 1px solid var(--accent);
    outline-offset: -1px;
}

.cell-note {
    color: var(--note-color);
    width: 36px;
    display: inline-block;
}

.cell-inst {
    color: var(--instrument-color);
    width: 22px;
    display: inline-block;
    text-align: center;
}

.cell-vol {
    color: var(--volume-color);
    width: 14px;
    display: inline-block;
    text-align: center;
}

.cell-fx {
    color: var(--effect-color);
    width: 22px;
    display: inline-block;
    text-align: center;
}

.cell-empty {
    color: var(--text-muted);
    opacity: 0.4;
}

.cell-separator {
    color: var(--text-muted);
    opacity: 0.3;
    width: 6px;
    display: inline-block;
    text-align: center;
}

/* Cursor column highlight */
.cursor-col-note { background: rgba(88, 214, 141, 0.08); }
.cursor-col-inst { background: rgba(133, 193, 233, 0.08); }
.cursor-col-vol { background: rgba(247, 220, 111, 0.08); }
.cursor-col-fx { background: rgba(187, 143, 206, 0.08); }

/* Status Bar */
.status-bar {
    display: flex;
    gap: 20px;
    padding: 4px 12px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    font-size: 12px;
    color: var(--text-secondary);
    font-family: var(--font-mono);
}

.status-edit {
    color: var(--accent);
    font-weight: 700;
}

.status-edit.inactive {
    color: var(--text-muted);
}

/* Songs Page */
.songs-page {
    padding: 24px;
    overflow-y: auto;
    height: 100%;
}

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

.songs-header h2 {
    font-size: 20px;
    font-weight: 600;
}

.songs-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.songs-loading, .songs-empty {
    color: var(--text-muted);
    padding: 20px;
    text-align: center;
}

.song-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 6px;
    transition: border-color 0.15s;
}

.song-card:hover {
    border-color: var(--border-light);
}

.song-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

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

.song-meta {
    font-size: 12px;
    color: var(--text-muted);
}

.song-actions {
    display: flex;
    gap: 8px;
}

/* Toast Notifications */
#toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    padding: 10px 16px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 13px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    animation: toast-in 0.2s ease;
}

.toast.toast-error {
    border-color: var(--danger);
    color: var(--danger);
}

.toast.toast-success {
    border-color: var(--accent);
}

@keyframes toast-in {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 24px;
    min-width: 300px;
    max-width: 500px;
}

.modal h3 {
    margin-bottom: 12px;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 16px;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-light);
}