/* =============================================
   BEAT STUDIO — Lil Beat Lab
   Owns: studio layout, pad grid, sequencer,
         transport bar, category tabs, modals.
   Does NOT own: landing page sections (theme.css).
   ============================================= */

/* ===== STUDIO BODY OVERRIDE ===== */
.studio-body {
  min-height: 100vh;
  background: var(--bg-dark);
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* ===== NAV ===== */
.studio-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 1.5rem;
  background: rgba(10,10,26,0.95);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.studio-nav-logo {
  font-size: 1.3rem;
  font-weight: 900;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.studio-nav-center {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.studio-title-tag {
  font-family: 'Space Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.08);
  padding: 0.3rem 0.8rem;
  border-radius: 50px;
}

.studio-nav-right { display: flex; align-items: center; gap: 0.75rem; }

.btn-share {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(177,77,255,0.15);
  border: 1px solid rgba(177,77,255,0.35);
  color: var(--neon-purple);
  font-family: 'Outfit', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.45rem 1rem;
  border-radius: 50px;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}
.btn-share:hover { background: rgba(177,77,255,0.28); transform: scale(1.03); }

/* ===== MAIN ===== */
.studio-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding: 1.25rem 1rem 2rem;
  max-width: 780px;
  margin: 0 auto;
  width: 100%;
}

/* ===== TRANSPORT BAR ===== */
.transport-bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: var(--radius);
  padding: 0.9rem 1.2rem;
  flex-wrap: wrap;
}

.transport-btn {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: 'Outfit', sans-serif;
  font-size: 0.9rem;
  font-weight: 700;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: transform 0.1s, opacity 0.2s;
  padding: 0.6rem 1.1rem;
}
.transport-btn:active { transform: scale(0.95); }

.play-btn {
  background: var(--neon-green);
  color: #000;
  min-width: 88px;
}
.play-btn.playing {
  background: var(--neon-pink);
  color: #fff;
}

.clear-btn {
  background: rgba(255,255,255,0.06);
  color: var(--text-muted);
  border: 1px solid rgba(255,255,255,0.1);
}
.clear-btn:hover { color: var(--neon-pink); border-color: rgba(255,45,123,0.4); }

/* ===== BPM GROUP ===== */
.bpm-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
}

.bpm-label {
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--neon-cyan);
}

.bpm-step {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.12);
  background: var(--bg-glow);
  color: var(--text-primary);
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
}
.bpm-step:hover { background: rgba(0,240,255,0.15); }

.bpm-value {
  font-family: 'Space Mono', monospace;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--neon-cyan);
  min-width: 38px;
  text-align: center;
}

.bpm-slider {
  flex: 1;
  -webkit-appearance: none;
  height: 4px;
  border-radius: 4px;
  background: rgba(0,240,255,0.2);
  outline: none;
  cursor: pointer;
  min-width: 60px;
}
.bpm-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--neon-cyan);
  cursor: pointer;
  box-shadow: 0 0 8px rgba(0,240,255,0.6);
}
.bpm-slider::-moz-range-thumb {
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--neon-cyan);
  cursor: pointer;
  border: none;
}

/* ===== STEP INDICATOR DOTS ===== */
.step-indicator {
  display: flex;
  gap: 4px;
  align-items: center;
}

.step-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.12);
  transition: background 0.1s, transform 0.1s;
}
.step-dot.active {
  background: var(--neon-yellow);
  transform: scale(1.4);
  box-shadow: 0 0 6px rgba(255,230,0,0.8);
}

/* ===== CATEGORY TABS ===== */
.category-tabs {
  display: flex;
  gap: 0.5rem;
}

.cat-tab {
  flex: 1;
  font-family: 'Outfit', sans-serif;
  font-size: 0.9rem;
  font-weight: 700;
  border: 1px solid rgba(255,255,255,0.08);
  background: var(--bg-card);
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  padding: 0.75rem 0.5rem;
  cursor: pointer;
  transition: all 0.2s;
  touch-action: manipulation;
}
.cat-tab:hover { color: var(--text-primary); border-color: rgba(255,255,255,0.2); }
.cat-tab.active {
  color: #000;
  border-color: transparent;
}
.cat-tab[data-cat="drums"].active  { background: var(--neon-pink); box-shadow: 0 0 20px rgba(255,45,123,0.4); }
.cat-tab[data-cat="bass"].active   { background: var(--neon-orange); box-shadow: 0 0 20px rgba(255,107,43,0.4); }
.cat-tab[data-cat="melody"].active { background: var(--neon-purple); box-shadow: 0 0 20px rgba(177,77,255,0.4); }
.cat-tab[data-cat="fx"].active     { background: var(--neon-cyan); box-shadow: 0 0 20px rgba(0,240,255,0.4); }

/* ===== PAD GRID ===== */
.pad-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
}

.pad {
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  touch-action: manipulation;
  transition: transform 0.08s, box-shadow 0.08s;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  -webkit-tap-highlight-color: transparent;
}

.pad::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.22) 0%, transparent 55%);
  pointer-events: none;
}

.pad-emoji {
  font-size: 1.6rem;
  line-height: 1;
  pointer-events: none;
  position: relative;
  z-index: 1;
}

.pad-name {
  font-family: 'Space Mono', monospace;
  font-size: 0.58rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
  font-weight: 700;
  pointer-events: none;
  position: relative;
  z-index: 1;
}

/* Pad firing animation */
.pad.firing {
  transform: scale(0.91);
  box-shadow: 0 0 0px transparent;
}

/* Pad colors for drums */
.pad[data-sound="kick"]    { background: var(--neon-pink); }
.pad[data-sound="snare"]   { background: var(--neon-orange); }
.pad[data-sound="hihat"]   { background: var(--neon-cyan); }
.pad[data-sound="clap"]    { background: var(--neon-yellow); }
.pad[data-sound="perc1"]   { background: var(--neon-purple); }
.pad[data-sound="perc2"]   { background: var(--neon-green); }
.pad[data-sound="crash"]   { background: var(--neon-pink); }
.pad[data-sound="ride"]    { background: var(--neon-cyan); }
/* bass */
.pad[data-sound="bass1"]   { background: var(--neon-orange); }
.pad[data-sound="bass2"]   { background: var(--neon-yellow); }
.pad[data-sound="bass3"]   { background: var(--neon-pink); }
.pad[data-sound="bass4"]   { background: var(--neon-purple); }
.pad[data-sound="bass5"]   { background: var(--neon-green); }
.pad[data-sound="bass6"]   { background: var(--neon-cyan); }
.pad[data-sound="bass7"]   { background: var(--neon-orange); }
.pad[data-sound="bass8"]   { background: var(--neon-yellow); }
/* melody */
.pad[data-sound="mel1"]    { background: var(--neon-purple); }
.pad[data-sound="mel2"]    { background: var(--neon-cyan); }
.pad[data-sound="mel3"]    { background: var(--neon-pink); }
.pad[data-sound="mel4"]    { background: var(--neon-yellow); }
.pad[data-sound="mel5"]    { background: var(--neon-green); }
.pad[data-sound="mel6"]    { background: var(--neon-orange); }
.pad[data-sound="mel7"]    { background: var(--neon-purple); }
.pad[data-sound="mel8"]    { background: var(--neon-cyan); }
/* fx */
.pad[data-sound="fx1"]     { background: var(--neon-cyan); }
.pad[data-sound="fx2"]     { background: var(--neon-green); }
.pad[data-sound="fx3"]     { background: var(--neon-pink); }
.pad[data-sound="fx4"]     { background: var(--neon-purple); }
.pad[data-sound="fx5"]     { background: var(--neon-yellow); }
.pad[data-sound="fx6"]     { background: var(--neon-orange); }
.pad[data-sound="fx7"]     { background: var(--neon-cyan); }
.pad[data-sound="fx8"]     { background: var(--neon-pink); }

/* ===== SEQUENCER ===== */
.sequencer-section {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
}

.seq-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.85rem;
}

.seq-label {
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.seq-steps-label {
  color: var(--neon-purple);
}

.seq-controls { display: flex; gap: 0.5rem; }

.seq-ctrl-btn {
  font-family: 'Outfit', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--text-muted);
  border-radius: 8px;
  padding: 0.3rem 0.75rem;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}
.seq-ctrl-btn:hover { color: var(--neon-purple); border-color: rgba(177,77,255,0.4); }

.sequencer {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.seq-row {
  display: grid;
  grid-template-columns: 80px repeat(8, 1fr);
  gap: 0.35rem;
  align-items: center;
}

.seq-row-label {
  font-family: 'Space Mono', monospace;
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.seq-cell {
  aspect-ratio: 1;
  border-radius: 6px;
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.04);
  cursor: pointer;
  transition: all 0.12s;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  position: relative;
}

.seq-cell.on { border-color: transparent; }
.seq-cell.on[data-row="0"] { background: var(--neon-pink);   box-shadow: 0 0 8px rgba(255,45,123,0.5); }
.seq-cell.on[data-row="1"] { background: var(--neon-orange); box-shadow: 0 0 8px rgba(255,107,43,0.5); }
.seq-cell.on[data-row="2"] { background: var(--neon-purple); box-shadow: 0 0 8px rgba(177,77,255,0.5); }
.seq-cell.on[data-row="3"] { background: var(--neon-cyan);   box-shadow: 0 0 8px rgba(0,240,255,0.5); }

/* Playhead highlight on seq cells */
.seq-cell.playing-step { opacity: 0.5; filter: brightness(1.6); }

/* ===== MASTER BAR ===== */
.master-bar {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: var(--radius);
  padding: 0.9rem 1.2rem;
  flex-wrap: wrap;
}

.vol-group {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.vol-label {
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  white-space: nowrap;
}

.vol-slider {
  -webkit-appearance: none;
  width: 110px;
  height: 4px;
  border-radius: 4px;
  background: rgba(177,77,255,0.25);
  outline: none;
  cursor: pointer;
}
.vol-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--neon-purple);
  cursor: pointer;
  box-shadow: 0 0 6px rgba(177,77,255,0.6);
}
.vol-slider::-moz-range-thumb {
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--neon-purple);
  cursor: pointer;
  border: none;
}

.vol-pct {
  font-family: 'Space Mono', monospace;
  font-size: 0.75rem;
  color: var(--neon-purple);
  min-width: 36px;
}

.status-bar {
  flex: 1;
  text-align: right;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-style: italic;
}

/* ===== SHARE MODAL ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
  backdrop-filter: blur(6px);
}

.modal-box {
  background: var(--bg-card);
  border: 1px solid rgba(177,77,255,0.3);
  border-radius: var(--radius);
  padding: 2rem;
  max-width: 420px;
  width: 100%;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

.modal-title {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.modal-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
}

.share-url-row {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.share-url-input {
  flex: 1;
  background: var(--bg-glow);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 10px;
  color: var(--neon-cyan);
  font-family: 'Space Mono', monospace;
  font-size: 0.75rem;
  padding: 0.6rem 0.75rem;
  outline: none;
}

.btn-copy {
  background: var(--neon-purple);
  color: #fff;
  border: none;
  border-radius: 10px;
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 0.9rem;
  padding: 0.6rem 1.1rem;
  cursor: pointer;
  transition: opacity 0.2s;
}
.btn-copy:hover { opacity: 0.85; }

.modal-close {
  width: 100%;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--text-primary);
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  border-radius: 10px;
  padding: 0.75rem;
  cursor: pointer;
  transition: background 0.2s;
}
.modal-close:hover { background: rgba(255,255,255,0.1); }

/* ===== DRAG-AND-DROP ===== */

/* Pad draggable cursor hint — touch-action: none prevents scroll during drag */
.pad { cursor: grab; touch-action: none; }
.pad:active { cursor: grabbing; }

/* Pad being dragged — dim in-place, keep shape */
.pad.dragging-source {
  opacity: 0.35;
  transform: scale(0.92);
  pointer-events: none;
}

/* Floating drag ghost that follows the pointer */
.drag-ghost {
  position: fixed;
  z-index: 2000;
  pointer-events: none;
  width: 64px;
  height: 64px;
  border-radius: 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.15rem;
  box-shadow: 0 8px 32px rgba(0,0,0,0.45), 0 0 20px rgba(177,77,255,0.5);
  transform: translate(-50%, -50%) scale(1.15);
  transition: transform 0.08s;
  will-change: left, top;
}
.drag-ghost .pad-emoji { font-size: 1.4rem; }
.drag-ghost .pad-name {
  font-family: 'Space Mono', monospace;
  font-size: 0.5rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.85);
  font-weight: 700;
}

/* Sequencer row as a valid drop target */
.seq-row.drop-target {
  background: rgba(177,77,255,0.12);
  border-radius: 8px;
  outline: 2px dashed rgba(177,77,255,0.6);
  outline-offset: 2px;
  transition: background 0.15s, outline 0.15s;
}

/* Individual cell hover during drag */
.seq-cell.drop-hover {
  background: rgba(177,77,255,0.35) !important;
  border-color: var(--neon-purple) !important;
  transform: scale(1.15);
  box-shadow: 0 0 12px rgba(177,77,255,0.6);
}

/* Drop snap animation */
@keyframes dropSnap {
  0% { transform: scale(1.3); opacity: 0.6; }
  50% { transform: scale(0.9); }
  100% { transform: scale(1); opacity: 1; }
}
.seq-cell.just-dropped {
  animation: dropSnap 0.3s ease-out;
}
.seq-row-label.just-updated {
  animation: dropSnap 0.3s ease-out;
  color: var(--neon-purple) !important;
}

/* Hint badge on pads — visible on first visit */
.pad-drag-hint {
  position: absolute;
  bottom: 4px;
  right: 4px;
  font-size: 0.5rem;
  background: rgba(0,0,0,0.5);
  color: rgba(255,255,255,0.7);
  padding: 1px 4px;
  border-radius: 4px;
  pointer-events: none;
  z-index: 2;
  font-family: 'Space Mono', monospace;
  letter-spacing: 0.03em;
}

/* ===== PWA INSTALL BANNER ===== */
/* Owns: the "Install Lil Beat Lab" prompt shown on Android (beforeinstallprompt)
   and the iOS "Add to Home Screen" nudge. Does NOT own: service worker logic. */
.pwa-install-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  background: linear-gradient(135deg, #1a1a3a 0%, #12122a 100%);
  border-top: 2px solid var(--neon-purple);
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  box-shadow: 0 -4px 30px rgba(177,77,255,0.3);
  transform: translateY(100%);
  transition: transform 0.3s ease-out;
}
.pwa-install-banner.visible { transform: translateY(0); }

.pwa-install-content {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex: 1;
  min-width: 0;
}

.pwa-install-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.pwa-install-text {
  font-size: 0.9rem;
  color: var(--text-primary);
  line-height: 1.4;
}
.pwa-install-text strong { color: var(--neon-purple); }

.pwa-install-actions {
  display: flex;
  gap: 0.5rem;
  flex-shrink: 0;
}

.pwa-install-btn {
  background: linear-gradient(135deg, var(--neon-pink) 0%, var(--neon-purple) 100%);
  color: #fff;
  border: none;
  border-radius: 10px;
  font-family: 'Outfit', sans-serif;
  font-size: 0.9rem;
  font-weight: 700;
  padding: 0.6rem 1.4rem;
  cursor: pointer;
  transition: transform 0.1s, box-shadow 0.2s;
  box-shadow: 0 0 16px rgba(255,45,123,0.3);
}
.pwa-install-btn:hover { transform: scale(1.04); box-shadow: 0 0 24px rgba(255,45,123,0.5); }
.pwa-install-btn:active { transform: scale(0.96); }

.pwa-dismiss-btn {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--text-muted);
  border-radius: 10px;
  font-family: 'Outfit', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.6rem 1rem;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}
.pwa-dismiss-btn:hover { color: var(--text-primary); border-color: rgba(255,255,255,0.25); }

/* ===== RESPONSIVE ===== */
@media (max-width: 600px) {
  .studio-main { padding: 1rem 0.75rem 1.5rem; gap: 0.9rem; }
  .studio-nav { padding: 0.7rem 1rem; }
  .studio-nav-center { display: none; }

  .transport-bar { gap: 0.65rem; padding: 0.75rem 1rem; }
  .bpm-group { flex-wrap: wrap; gap: 0.4rem; }
  .bpm-slider { min-width: 80px; }

  .pad-grid { gap: 0.55rem; }
  .pad-emoji { font-size: 1.3rem; }
  .pad-name { font-size: 0.5rem; }

  .seq-row { grid-template-columns: 60px repeat(8, 1fr); gap: 0.25rem; }
  .seq-row-label { font-size: 0.55rem; }

  .master-bar { flex-direction: column; align-items: flex-start; gap: 0.6rem; }
  .status-bar { text-align: left; }

  .category-tabs { gap: 0.35rem; }
  .cat-tab { font-size: 0.78rem; padding: 0.65rem 0.35rem; }
}

@media (max-width: 380px) {
  .cat-tab { font-size: 0.7rem; }
  .step-indicator { display: none; }
  .pwa-install-banner { flex-direction: column; text-align: center; }
  .pwa-install-content { justify-content: center; }
  .pwa-install-actions { width: 100%; justify-content: center; }
}