/* ─── macOS Installation Modal ────────────────────────────── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(10, 15, 30, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.modal-backdrop.is-open {
  opacity: 1;
  visibility: visible;
}

.modal-dialog {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-player);
  max-width: 520px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  transform: translateY(12px) scale(0.98);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-backdrop.is-open .modal-dialog {
  transform: translateY(0) scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.modal-title-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}

.modal-icon-mac {
  font-size: 22px;
  color: var(--text-primary);
}

.modal-title {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin: 0;
}

.modal-btn-close {
  background: transparent;
  border: none;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--text-muted);
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.modal-btn-close:hover {
  background: var(--bg-surface);
  color: var(--text-primary);
}

.modal-body {
  padding: 24px;
}

.modal-notice {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 20px;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  padding: 12px 14px;
  border-radius: var(--radius-sm);
}

.modal-steps {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.modal-step {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.modal-step-num {
  width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
  background: var(--text-primary);
  color: #ffffff;
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 1px;
}

.modal-step-content {
  flex: 1;
}

.modal-step-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.modal-step-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.45;
}

.modal-terminal-box {
  margin-top: 8px;
  background: #0f172a;
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.modal-terminal-code {
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  font-size: 12.5px;
  color: #38bdf8;
  word-break: break-all;
  user-select: all;
}

.btn-copy-cmd {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-xs);
  color: #f8fafc;
  font-size: 12px;
  font-weight: 600;
  padding: 5px 9px;
  display: flex;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.btn-copy-cmd:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.3);
}

.btn-copy-cmd.copied {
  background: #059669;
  border-color: #10b981;
  color: #ffffff;
}

.modal-footer {
  padding: 16px 24px 20px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--bg-subtle);
  border-bottom-left-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
}

.modal-footer .btn-primary {
  width: 100%;
  justify-content: center;
  padding: 12px 20px;
  font-size: 14px;
}

.modal-footer-note {
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
}