/**
 * ================================================================
 *  RoxyPiano v2.0 — Layout: Header, Welcome, Footer, Responsive
 *  © 2026 Roxy Emanuel. All Rights Reserved.
 * ================================================================
 */

/* ── Header & Navigasi ─────────────────────────────────────────── */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  user-select: none;
}
.header-center { display: flex; align-items: center; gap: 12px; }
.header-actions { display: flex; align-items: center; gap: 6px; }

/* Status MIDI */
.midi-status {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  font-size: .75rem;
  color: var(--text-muted);
}
.midi-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--error);
  transition: var(--transition);
  box-shadow: 0 0 6px var(--error);
}
.midi-dot.connected {
  background: var(--success);
  box-shadow: 0 0 6px var(--success);
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot { 0%,100%{ opacity:1 } 50%{ opacity:.5 } }

/* Pemilih Tema Warna */
.theme-dots { display: flex; gap: 5px; }
.theme-dot {
  width: 16px; height: 16px; border-radius: 50%;
  cursor: pointer; border: 2px solid transparent;
  transition: var(--transition);
}
.theme-dot:hover, .theme-dot.active { border-color: #fff; transform: scale(1.2); }
.theme-dot.cyan   { background: #00d4ff; }
.theme-dot.purple { background: #7c3aed; }
.theme-dot.green  { background: #00ff88; }
.theme-dot.orange { background: #ff8c00; }
.theme-dot.pink   { background: #ff69b4; }

/* ── Welcome Overlay ───────────────────────────────────────────── */
.welcome-overlay {
  position: fixed; inset: 0; z-index: 1000;
  display: flex; align-items: center; justify-content: center;
  background: rgba(10,10,15,.95);
  backdrop-filter: blur(30px);
  animation: fadeIn .5s;
}
.welcome-overlay.hidden { display: none; }
@keyframes fadeIn { from { opacity:0 } to { opacity:1 } }

.welcome-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px;
  max-width: 500px; width: 90%;
  text-align: center;
  animation: slideUp .6s ease-out;
  box-shadow: 0 0 50px rgba(0,212,255,.08);
}
@keyframes slideUp { from { opacity:0; transform:translateY(25px) } to { opacity:1; transform:translateY(0) } }

.welcome-card h1 {
  font-family: var(--font-display);
  font-size: 1.8rem; font-weight: 800;
  margin-bottom: 6px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.welcome-card .subtitle { color: var(--text-muted); font-size: .85rem; margin-bottom: 28px; }
.welcome-steps { text-align: left; list-style: none; margin-bottom: 28px; }
.welcome-steps li {
  padding: 10px 14px; margin-bottom: 6px;
  background: var(--surface-2);
  border-radius: var(--radius);
  border-left: 3px solid var(--accent);
  font-size: .82rem;
  display: flex; align-items: center; gap: 10px;
}
.step-num {
  width: 24px; height: 24px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: .72rem; color: #fff; flex-shrink: 0;
}
.welcome-card .btn-primary { width: 100%; justify-content: center; padding: 11px; font-size: .95rem; }
.welcome-card .creator {
  margin-top: 16px; font-size: .7rem; color: var(--text-dim);
  letter-spacing: 0.5px;
}

/* ── Footer & Copyright ────────────────────────────────────────── */
.footer {
  padding: 16px 20px;
  text-align: center;
  color: var(--text-dim);
  font-size: .68rem;
  border-top: 1px solid var(--border-2);
  background: var(--surface);
}
.footer .copyright {
  margin-top: 8px;
  font-size: .72rem;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}
.footer .copyright strong {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
}
.footer .version-badge {
  display: inline-block;
  padding: 2px 8px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  font-size: .6rem;
  margin-left: 6px;
  color: var(--accent);
  font-weight: 600;
}

/* ── Responsive Design ─────────────────────────────────────────── */
@media (max-width: 1200px) {
  .controls-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .header { padding: 8px 12px; flex-wrap: wrap; gap: 6px; }
  .header-logo { font-size: .95rem; }
  .header-center { display: none; }
  #fallingCanvas { height: 260px; }
  .controls-section { padding: 10px; }
  .stats-grid { grid-template-columns: repeat(3, 1fr); }
  .inst-grid { grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); }
  .welcome-card { padding: 24px; }
  .welcome-card h1 { font-size: 1.4rem; }
}