:root {
  --bg-main: #0a0b0e;
  --bg-card: #14161d;
  --bg-sidebar: #101218;
  --border-color: #222634;
  
  --accent-green: #10b981;
  --accent-cyan: #06b6d4;
  --accent-purple: #8b5cf6;

  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;

  --font-ui: 'Inter', -apple-system, sans-serif;
  --font-mono: 'Fira Code', monospace;
}

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

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-ui);
  line-height: 1.5;
  overflow-x: hidden;
}

.view-screen { min-height: 100vh; display: flex; flex-direction: column; }

/* Studio Header */
.studio-header, .canvas-header {
  height: 60px;
  background-color: var(--bg-sidebar);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
}

.header-left { display: flex; align-items: center; }

.brand-logo {
  font-family: var(--font-mono);
  font-weight: 800;
  color: var(--accent-green);
}

.brand-tagline-header {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-family: var(--font-mono);
}

/* Hub Layout */
.hub-container { padding: 40px 60px; flex-grow: 1; }
.hub-action-bar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 40px; }
.action-btn-group { display: flex; gap: 12px; }

.dashboard-section { margin-bottom: 40px; }
.dashboard-section h3 { margin-bottom: 16px; font-size: 1.1rem; color: var(--text-muted); }

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.card-item {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 20px;
  cursor: pointer;
  transition: transform 0.15s ease, border-color 0.15s ease;
}

.card-item:hover {
  transform: translateY(-3px);
  border-color: var(--accent-green);
}

.card-title { font-size: 1.1rem; font-weight: 700; color: #fff; margin-bottom: 6px; }
.card-sub { font-size: 0.8rem; color: var(--text-dim); }

/* Album Studio Workspace */
.album-workspace-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 40px;
}

.album-meta-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.cover-art-container {
  width: 100%;
  aspect-ratio: 1 / 1;
  background-color: var(--bg-card);
  border: 2px dashed var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  position: relative;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.15s ease;
}

.cover-art-container:hover { border-color: var(--accent-green); }
.cover-art-container img { width: 100%; height: 100%; object-fit: cover; }

.cover-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 20px;
}

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

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

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

.track-row-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--bg-main);
  border: 1px solid var(--border-color);
  padding: 14px 20px;
  border-radius: 8px;
  cursor: grab;
  transition: border-color 0.15s ease;
}

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

.track-row-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.drag-handle { color: var(--text-dim); cursor: grab; font-family: var(--font-mono); }
.track-num { font-family: var(--font-mono); color: var(--accent-green); font-weight: 700; width: 24px; }
.track-name-label { font-weight: 600; font-size: 1rem; }

/* Writer Workspace Canvas */
.writer-workspace {
  display: flex;
  flex-grow: 1;
  height: calc(100vh - 60px);
}

.canvas-paper {
  flex-grow: 1;
  background-color: var(--bg-main);
  padding: 40px 80px;
  overflow-y: auto;
}

.bar-lines-wrapper {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: 800px;
  margin: 0 auto;
}

.bar-line-row {
  display: flex;
  align-items: center;
  gap: 16px;
}

.bar-number {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  width: 60px;
  user-select: none;
}

.bar-input {
  flex-grow: 1;
  background: transparent;
  border: none;
  outline: none;
  color: #fff;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  padding: 6px 0;
  border-bottom: 1px solid transparent;
}

.bar-input:focus {
  border-bottom-color: var(--accent-green);
}

.syllable-count {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-cyan);
  width: 30px;
  text-align: right;
}

/* Rhyme Dock Side Panel */
.rhyme-dock {
  width: 320px;
  background-color: var(--bg-sidebar);
  border-left: 1px solid var(--border-color);
  padding: 24px;
  display: flex;
  flex-direction: column;
}

.dock-header { margin-bottom: 20px; }
.target-badge { font-size: 0.75rem; color: var(--accent-green); font-family: var(--font-mono); display: block; margin-top: 4px; }

.rhyme-results-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  overflow-y: auto;
}

.rhyme-chip {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  cursor: pointer;
}

.rhyme-chip:hover {
  border-color: var(--accent-green);
  color: var(--accent-green);
}

/* Modal Styles */
.modal-overlay {
  position: fixed; top: 0; left: 0; width: 100vw; height: 100vh;
  background: rgba(0,0,0,0.8); display: flex; align-items: center; justify-content: center;
  z-index: 1000; opacity: 0; pointer-events: none; transition: opacity 0.2s ease;
}

.modal-overlay.open { opacity: 1; pointer-events: all; }
.modal-box { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 12px; width: 100%; max-width: 480px; padding: 32px; }

.form-group { margin-bottom: 16px; text-align: left; }
.form-group label { display: block; font-size: 0.8rem; color: var(--text-muted); margin-bottom: 6px; }
.form-group input, .form-textarea { width: 100%; background: var(--bg-main); border: 1px solid var(--border-color); padding: 10px; border-radius: 6px; color: #fff; }
.form-group input:focus, .form-textarea:focus { outline: none; border-color: var(--accent-green); }

.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 24px; }

/* Buttons & Controls */
.btn-primary { background: var(--accent-green); color: #000; border: none; padding: 10px 20px; border-radius: 6px; font-weight: 700; cursor: pointer; }
.btn-primary-sm { background: var(--accent-green); color: #000; border: none; padding: 6px 14px; border-radius: 6px; font-weight: 700; cursor: pointer; }
.btn-secondary, .btn-secondary-sm { background: var(--bg-card); color: #fff; border: 1px solid var(--border-color); padding: 8px 16px; border-radius: 6px; cursor: pointer; }
.btn-icon { background: transparent; border: none; color: var(--text-muted); cursor: pointer; font-weight: 700; font-size: 0.9rem; }

.canvas-title-input {
  background: transparent;
  border: none;
  color: #fff;
  font-weight: 700;
  font-size: 1.1rem;
  outline: none;
}

.beat-deck { display: flex; align-items: center; gap: 8px; }
.control-label { font-size: 0.75rem; color: var(--text-dim); }
.bpm-input { width: 60px; background: var(--bg-main); border: 1px solid var(--border-color); color: #fff; padding: 4px 8px; border-radius: 4px; }

.full-width { width: 100%; }
.text-dim { color: var(--text-dim); }
.text-xs { font-size: 0.75rem; }